Technically it can, but money from Appstore, Playstore, Windows Store is too lucrative for the behemoths to give up their hold on them to improve the browser ecosystem & web apps in general.
PWA, Linux phone's dependency on web apps can help a bit, but I don't see it beyond the enthusiast/privacy market.
Because App publisher - Appstore relationship is 'scratch my back, I'll scratch yours' type relationship. Top apps isn't going to get as much telemetry from web app as they get from native app, at least not without people knowing or fighting with ad-blockers.
...really? Web development is the absolute worst development experience I've had since doing COBOL in college. I have difficulty believing anyone can claim this who has ever developed with proper tooling for anything else.