The problem is simple.
Microsoft got slapped down.
Since the Apple and Google have been allowed to pick off and go far further than MS did.
The problem you now have is how are the competition regulators going to deal with MS when the other two are equally as bad, if not more so.
They ALL need huge fines (think multi-billion) and default browsers removed. They should also be banned from shoving " This page would be better in...." on their own sites.