But considering how much Google uses their position to maintain the monopoly in Search and browsers, it's in our interest to level the playing field. So, despite the annoyances, we are better off in allowing Microsoft to grow market share. I'm a Windows and Edge user (by choice) and I can very easily neither use Edge nor Outlook if I don't want to.
They are both abusing. Allowing both to go as they are does not pick winners or losers. While you are right in theory, in practice it takes years for antitrust trials to go through - and they fail often.