> To me it looks like zero effort has been made to engage with Mozilla, Apple, etc., on the right way forward here - just Google high-handedly making moves and abusing their position as per usual.

What would make you think that? The submission links prominently to the whatwg proposal github issue, which is the forum where that engagement would happen. It explicitly deep-links to Mozilla's and Apple's posts in that thread. It has the usage stats that you just presume exist.

It's like you just made up a scenario and posted it as facts with zero effort to verify any of it.