[rtpg]

There's also the fact that the UI tools for web development are mostly way easier to use than Gtk or Qt.

Even "simple" stuff like Tcl/Tk is not trivial to get working easily or well.

HTML + CSS + something like React is miles simpler than writing something for Gtk. Qt has QML now but the C++ Qt bindings are _pretty hard_! And after all that work you don't (by default) get an app that resizes as nicely as the HTML/CSS box model does!

I think that WxWidgets has one of the better usability stories for cross-platform native, though.

If someone wrote a good feeling UI library that generated native UIs and had good JS and Python bindings, so many people would be happy to use it, I think. But right now, despite all the shortcomings, web tech is pretty easy to prototype in.

[scottlu2]

This is an important point. Being easier to create means faster to market, faster to create new features, easier cross platform, more value for users in less time. Not all apps can be web based but for those that can be, faster dev time has become a competitive requirement.