PWA's do work, but they are hard to install (not available in the appstore, the user has to go through a non-obvious sequence of steps they won't discover unless they Google it). They are slow (because safari refuses to implement caching of compiled JavaScript or webassembly). They can't store persistent data, so the user experience is terrible (yay - who wants a notekeeping app that deletes all your notes every 30 days?). The data doesn't sync to iCloud. It doesn't integrate with the rest of the OS (no way to share a picture to a PWA for example). The Safari browser engine they must run in is ~3 years behind desktop and Android browsers with supporting web standards. There is no way to do background stuff like playing music, using the GPS for directions, etc.