Microsoft is the OG. The other two are just imitators. The only reason Microsoft happens to step carefully. Was a little thing that happened in the late 1990s. That all penalties were largely waived for. But still it frightened them enough to behave better for a short while.
Google has long since surpassed anything MS dreamed of doing.
Edit: to be clear, this article is that they're blocking programs other than the control panel from changing the default browser.
Meanwhile, in Android, I've set Newpipe as the default app for YouTube videos. I have every single url for YouTube set to open in Newpipe. Still opens all YouTube video links in the YouTube app.
So Google is selling license for code and technologies. They've shown no ownership of in a competitor's product? Google is actively funding litigious troll shell corporations who shown no actual harm to harass and drain competitors resources? Google is creating and using secret apis for themselves. Breaking the ones for third parties in order to hold them back?
I'm not saying Google's good Or anything. Not defending them in any way. But they've got a long way to go before they reach Microsoft level. Microsoft is literally the reason why before going public. Google had the motto of don't be evil.