[Yaggo]

Sorry, but the situation is not even remotely comparable. Nowadays when a new CSS feature is introduced by a browser vendor (using a vendor prefix), it is designed to be standardised and implementable by anyone. Other vendors may contribute and there is discussion. If the feature gains popularity, it will eventually be implemented by big players and become a [first de facto, later de jury] standard.

The posted link is an example of experiment for measuring whether the new fancy stuff is good enough.

In the dark days of IE era, MS mainly exposed its internal Windows APIs (and security holes) to its browser. (Yeah, there was some truly good stuff too but that doesn't make MS less evil.)

[Yaggo]

Not to mention that webkit, the engine behind Chrome and Safari, is an open source project. (Forked from KHTML by Apple.)