Not quite accurate - Google is not the only party in this. Apple, Mozilla, Microsoft and Google formed their own group (WHATWG) that effectively took over the development of a number of standards - HTML and DOM included [0] - and follow and implement those, with W3 ratifying them ex post facto (or not, who cares?).

Google definitely plays a big role in this, but the others should not be left off the hook.

[0] https://spec.whatwg.org/