>Browser does not have a fuck ton of well supported widgets

What are you talking about ? HTML and CSS is full of widget libraries, it's the best cross platform widget library out there.

Ease of deployment + reach is the driving force behind improving the platform, but at the present nothing in Rust can even compare to something like Material UI. And let's not even go into stuff like date range picker components and shit where companies probably spent millions in engineering effort to get them right (eg. AirBnB) .