In an environment most convenient for making webapps people make webapps.

It’s not even such a wrong idea honestly, if the “web” in “webapp” were a bit leaner and you’d make local applications with something document-oriented for GUI looking at a local service. It’s just a decent bit of structure to make application design easier. Nothing wrong with that IMHO.

But, ahem, when by “webapp” we mean that we have a browser fulfilling the role of an operating system, and there’s one company making it, then something is wrong.