It would be weird for a mustache-twirling villain to give most of their source code to their competitors, hence allowing them to start out compatible with nearly every website on the Internet. (With a bit of DRM needed for video, so those competitors can't be pure open source. But still, it's not going to stop Microsoft.) The article admits to this, then kind of ignores it.
> It would be weird for a mustache-twirling villain to give most of their source code to their competitors, hence allowing them to start out compatible with nearly every website on the Internet. No it wouldn't, if the mustache-twirling villain's indent was control . Those competitors are following most if not all of Chrome's implementation decisions, and economically they're highly incentivized follow whatever Google…
They'd likely remain mostly compatible because all browser vendors do try to follow web standards nowadays. But maybe not more than Safari and Chrome are compatible. And it helps maintain Microsoft's veto on web standards (like Firefox has vetoed previous Chrome proposals).