In all seriousness, I could see a future where the browser is just another user environment. Desktop OS (Linuxes, Mac OSX, Windows), mobile OS (Android, iOS, Windows), and the browser (Firefox, Google Chrome, Safari, IE/Edge).

We compile things against it (there's a standard library/API/ABI), it has a screen that users interact with.

At the risk of sounding more irrationally exuberant than the parent, the browser is an OS in itself. Yes I realize that "OS" and "browser" are actual terms that have narrowly defined definitions, however the sentiment is the same.

It's just another client for our code/binaries to run on and in actuality what's running our code is irrelevant.

I'm intentionally avoiding calling it a platform, though.