“Dropbox has all my photos, Strava has all my workouts — all of these things can't be vibe-coded in a weekend. You're actually in a stronger position than these brand-new, mostly stateless AI tools.”

Long-term customer data is the real defensibility — apps vibe-coded overnight cannot replicate it

As vibe-coding floods the market with cheap new apps, established apps with years of accumulated user data hold a structural moat that cannot be replicated quickly. Strava's workout history, Dropbox's files, Flo's cycle data — these are personalized data assets that create switching costs and make the app irreplaceable. Eiting argues this advantage is now more valuable than it was before AI, because AI models trained on personal data compound the defensibility.