Most apps aren’t standalone and the services they depend on are nontrivial to build. For example, maybe you could vibe code a guitar tuner app, but not a ride share app.

I agree. The services which will be left standing will be those with a competitive moat: critical mass (Tinder, Facebook), content (YouTube, AppleTV), and scale (frontier AI models requiring expensive hardware), etc.

That said, if you look at the apps on your phone, I wager a large proportion don't have these moats. Translation, passwords, budget, reminders, email, to do, project management, messaging, browser, calendar, fitness, games, game tracking, etc.