What world are you living in? Web apps are literally 100+ times faster to start using, much easier to share, much easier to market, and you can offer much cheaper services as apple doesn't take a large cut of payments.
If what you say is true then you could find a platform bigger than something like TikTok or WhatsApp that is a PWA. The only one I can think of is Google.com, which technically is built in to your mobile OS anyway.
100+ times faster to start using: are they? I can type in the name of an app into my OS-wide search and tap “get” and that’s it. Swipe down, type “candy crush,” tap “get.”
Easier to market? What’s easier than saying “download the [name] app?” Arguably more complicated to say “go to example.com”
Much cheaper services? What is cheaper than TikTok or WhatsApp? Those companies make more money on the apps because they have more user data collection. Companies like Netflix go around the App Store cut entirely.
With installed apps the desires of the corporations and users pretty much align.
That's just a few of many advantages.