Earlier quoted context omitted.
The lineage of the rendering engine doesn't matter. What gives Apple and Google and Microsoft command of the standard is the fact that they mediate access to web pages; they own th actual customers. That's what matters.
Nonsense. Web standards are supposed to be de jure, not de facto. Once upon a time Microsoft had 90% of the browser’s market. We created web standards in order to prevent monopolies, such as the former IExplorer, from holding the market hostage. That’s the whole reason behind web standards . And yes, they matter even with an IExplorer that has 90% market share, because governments can and do enforce adherence. That’s…
HTML5, in large part, was created to do exactly the opposite -- formally set down in writing all the de facto quirks of HTML as actually used, parsed and rendered in the real world, instead of continuing to prescribe behaviors which didn't match observed reality.