IE was replaced because it was a hole-riddled nonstandard mess, and Google used their position to shove Chrome into everyone's mindshare (something this regulation appears to forbid, incidentally). Chrome isn't nonstandard because Google are very careful to comply with standards - which is easy enough when they have many employees involved with designing them and tend to manipulate those committees in their favor, and even if they fail they can just release whatever they want and use the technology's widespread adoption to justify its eventual standardization. Also, as a modern browser, Chrome is patched frequently, so the security angle is also a nonstarter.

This means, if blink/chromium does come to dominate, means an end to the open web. Be very careful what you wish for.

It came very close. Had AOL/Netscape/Mozilla not opensourced and push open standards when they did, things would be very different.

Microsoft didn’t control server infra. Google does. And they are already abusing this position.