Google, like Microsoft before it, has its own requirements from the browser and thus its own development agenda.
It has shown it cares little for standards unless supporting these enhances itself in someway. Its main aim is domininate and control or destroy any opposition.
However there some that are not rolling over and dying and some that have become the spy in the camp. An enemy within.
KarlKarl, there 300 browsers, but only 5 engines of any signifcance
Gecko (Mozilla), Blink (Chromium), Webkit (Safari, a fork of KHTML), Trident (IE) and EdgeHTML (MS edge)
Trident and EdgeHTML have effectively ceased development, which leaves three.