[onlyrealcuzzo]

Probably not a good idea for the same reason we do not make phones a protocol and say this is all phones will do for N years, make the most of it?

YMMV. If you hate Google and love Apple - it sounds like a good idea to kill innovation at Google's expense.

There's nothing stopping the web from being frozen. Safari could do it if it wanted to. All that would happen is that Safari would lose market share.