Most investing content focuses on which stocks have the best moats. That makes sense: wide moats protect profits and compound returns over decades. But the opposite question matters just as much. Which companies are losing their moats right now?
An eroding moat does not mean a stock is worthless. It means the competitive advantages that once protected profits are getting weaker. Margins shrink. Competitors gain share. Pricing power fades. For long-term investors, recognizing these patterns early is the difference between holding a compounder and holding a value trap.
Here are seven companies showing real signs of moat erosion in 2026, based on Moatifi's moat scoring methodology and recent financial data.
What Moat Erosion Looks Like
Before the list, it helps to understand the warning signs. Moat erosion rarely happens overnight. It follows a pattern:
- Declining return on invested capital (ROIC) over 3-5 years
- Shrinking gross margins despite revenue growth
- Increasing customer churn or lower switching costs
- New competitors gaining meaningful share
- Pricing pressure from substitutes or commoditization
If you see three or more of these in a single company, the moat is likely weakening. Moatifi's AI durability scores also flag companies where technology is actively eroding competitive advantages.
1. Intel (INTC): The Foundry Gamble
Intel once had the widest moat in semiconductors. It designed and manufactured the world's best chips under one roof. That vertical integration was its competitive advantage for decades.
Today, Intel is losing on both fronts. TSMC and Samsung dominate contract manufacturing. AMD and Apple design better-performing chips. Intel's process technology, once two years ahead, fell behind TSMC around 2018 and has not fully caught up.
The numbers tell the story: - ROIC has fallen from 20%+ in 2018 to single digits - Gross margins dropped from 60%+ to around 40% - Data center market share declined from 90%+ to under 75%
Intel's $20 billion foundry bet could reverse the trend, but it requires years of flawless execution against entrenched competitors. The moat is not gone, but it is meaningfully narrower than five years ago.
2. PayPal (PYPL): The Fintech Squeeze
PayPal pioneered digital payments and built a strong network effect. More buyers attracted more merchants, which attracted more buyers. That flywheel worked beautifully from 2000 to 2020.
Then everyone else showed up. Apple Pay, Google Pay, Block's Cash App, and Stripe all chip away at PayPal's core value proposition. Venmo faces competition from Zelle. Checkout conversion rates, once PayPal's best selling point, no longer differentiate as much.
Moat erosion signals: - Take rate (revenue per transaction) declining year over year - User growth stalling while competitors accelerate - Unbranded processing growing faster than branded checkout
PayPal still processes enormous transaction volume, but the switching costs that once kept merchants locked in are lower. See our full stock screener for PayPal's current moat score.
3. Disney (DIS): Brand Strength Meeting Structural Change
Disney's brand moat remains formidable. No company on earth has a comparable library of intellectual property spanning parks, movies, TV, merchandise, and streaming. But the economics of that moat are changing.
The theatrical movie business generates less profit than it did a decade ago. Streaming demands billions in content spend with uncertain returns. ESPN's cable bundle revenue is declining as cord-cutting accelerates. The parks business remains strong, but it cannot single-handedly offset the margin compression elsewhere.
What the data shows: - Operating margins well below historical averages - Streaming still burning cash or barely profitable - Linear TV (cable) revenue in structural decline
Disney is not losing its brand, but the business model that monetized that brand is under pressure. Read our full breakdown in Is Disney Stock Undervalued?.
4. Walgreens Boots Alliance (WBA): Pharmacy Retail Under Siege
Pharmacy retail once had a wide moat: convenient locations, insurance network contracts, and high switching costs for prescription refills. Walgreens had 9,000+ US stores creating a physical presence nobody could easily replicate.
Amazon Pharmacy, Mark Cuban's Cost Plus Drugs, and mail-order prescriptions are chipping away at all three advantages. Location matters less when medication ships to your door. Insurance networks are opening to new entrants. And switching a prescription takes one phone call.
Declining moat indicators: - Same-store sales declining - Store closure programs (cutting hundreds of locations) - Margin pressure from PBM negotiations - Stock price down significantly from 2015 highs
The physical retail pharmacy moat is eroding across the industry, not just at Walgreens. CVS Health faces similar pressures but has diversified into insurance and healthcare services.
5. 3M Company (MMM): Innovation Fatigue
3M built its moat on relentless innovation. The company's R&D culture produced Post-it Notes, Scotch tape, and thousands of industrial products with high switching costs. It held over 100,000 patents worldwide.
But 3M's innovation engine has stalled. Revenue growth has been flat to negative for several years. The company faces massive legal liabilities from PFAS chemicals and military earplugs. Management has restructured multiple times, spinning off the healthcare division.
Moat erosion evidence: - Organic revenue growth near zero for multiple years - ROIC declining from 20%+ to low teens - Multiple rounds of layoffs and restructuring - Legal liabilities creating ongoing uncertainty
The diversified industrial conglomerate model itself may be eroding. Investors increasingly prefer pure-play companies over conglomerates, limiting 3M's valuation multiple regardless of operational improvements.
6. Nike (NKE): Brand Premium Under Pressure
Nike's brand moat is real. It is one of the most recognized brands on the planet, and its athlete endorsement strategy built genuine emotional connection with consumers. For decades, Nike could charge premium prices because the swoosh meant something.
The challenge is that competitors have narrowed the gap. New Balance, Hoka, and On Running gained significant market share by offering comparable quality, better comfort, and a sense of freshness that Nike's ubiquity cannot match. Direct-to-consumer sales, once Nike's growth engine, require heavy investment in logistics and technology.
Warning signs: - Market share losses in running and lifestyle categories - Inventory management issues leading to markdowns - Wholesale channel partners reduced after DTC pivot - Multiple CEO changes signaling strategic uncertainty
Nike's brand is not disappearing, but its pricing power and market share dominance are clearly weaker than five years ago. The moat is narrower.
7. Paramount Global (PARA): Content Without Distribution Control
Paramount's content library includes some of the most iconic franchises in entertainment: Star Trek, Mission: Impossible, SpongeBob SquarePants, and the NFL on CBS. But owning great content is not enough when you do not control distribution.
Netflix, Amazon, and Apple outspend Paramount on content while also owning the distribution platform. Paramount+ has struggled to gain subscriber scale, and the advertising business faces the same cord-cutting headwinds as every legacy media company.
Eroding moat signals: - Subscriber growth lagging far behind Netflix and Disney+ - Free cash flow negative for extended periods - Forced to consider mergers to achieve viable scale - Content licensing revenue declining as competitors build their own libraries
Paramount represents the broader erosion of legacy media moats. Content alone does not create a durable competitive advantage without the distribution infrastructure to monetize it.
How to Protect Your Portfolio
Recognizing moat erosion is the first step. Here is how to act on it:
Monitor ROIC trends. A company's return on invested capital is the clearest signal of moat health. If ROIC drops for three consecutive years without a clear cyclical explanation, investigate why. Moatifi tracks this automatically for 458 S&P 500 stocks.
Watch the competition. Moats do not erode in a vacuum. They erode because competitors find ways around them. When a company starts losing share to upstarts, the moat is weakening.
Distinguish between temporary setbacks and structural decline. A bad quarter is not moat erosion. Five years of margin compression and share loss usually is.
Compare against companies with strengthening moats. While these seven companies face headwinds, others are building wider moats than ever. Microsoft, NVIDIA, and Visa all benefit from secular trends that reinforce their competitive positions.
Use moat scoring tools. Manual research takes time. Moatifi's AI-powered stock screener scores every S&P 500 company on moat strength, AI durability, and valuation, making it easier to identify both strong moats and eroding ones.
The Bottom Line
Moats are not permanent. The companies on this list are not necessarily bad investments at every price, but they are all facing real competitive threats to advantages that once seemed unassailable. For long-term investors, understanding where moats are weakening is just as important as finding where they are strong.
The best portfolios combine companies with wide, durable moats and avoid those where the moat is narrowing faster than the stock price reflects. Keep watching the fundamentals, and let the data guide you.