This is never going to happen so what’s the point arguing that it should?

As a dev if have to choose between a flawed but still very capable open platform and proprietary walled gardens where corporations wield absolute and arbitrary control I’ll take the open option and so should you.

For the Web that would probably be good, yes. But many of us are application programmers using the browser as a UI platform, and that doesn't have that much to do with the Web proper.

The Web platform needs to be split again into a document and a clearly separate application platform. With the proper architecture for each of them. Right now it is a compromise between right and left shore, dropping you into the water...