For many people wireless connectivity is spotty at best; particularly rural USA, most of Canada, and much of the non-western world. Whereas home internet connections tend to be fairly reliable. Anecdotally, I don't rely on web apps because the terrible network reliability that I have means that they are frustratingly slow and frequently outright break. Native mobile apps work just fine.
Properly-written PWAs can keep code and data locally cached to avoid this problem. Of course most companies just don't bother implementing that stuff
Besides, major draws for building web apps includes control of user data and keeping business logic behind an API.