I think we need to re-examine what "#OpenWeb" really is - it does NOT mean "Free" nor is it the SAME as "Open Source" - commonalities, yes.

Browsers MUST implement open specs IMO. Feature sets can be the competitive area. I often use car safety specs as an allegory.

In the ideal, I agree with you. I remain deeply divided and upset at what happened at M.I.T in March between @W3C @EFF & @FSF.