Why HTML/JavaScript/CSS are not compiled languages and will they ever be?

Question

Why HTML/JavaScript/CSS are not becoming compiled languages (or maybe even merge into a single compiled language)? What if browsers were running \"Browser Virtual Machine\" and

Answer 1

HTML

HTML is pretty much XML. DTD'd exist for various versions and developers can check against that at any time.

CSS

CSS is not a programming language, however I do agree that "compiled" CSS could work seeing as compilation would compress it. However with the support that CSS has and with the number of essential hacks any CSS needs to have, you'd never manage to compile it without errors.

JS

As others have mentioned, JS IS becoming a compiled language except the browser compiles it for you and not you yourself.