To the OP, insisting that apps running in browsers will never match native apps in terms of UX, that's a very audacious claim.
There are many powerful, competent, and well-funded entities with a vested interest in improving the web app experience (including Google). I wouldn't claim they're doomed from the start. This could be just another example of a disruptive technology, that's initially lacking in certain conventional metrics, but has a lot of room for improvement above and beyond the entrenched competition.