I don't necessarily think either is a good thing, but Microsoft is being
far more aggressive than Google is.
- In Windows 10, they already made it harder to change your default browser. You have to explicitly open the Settings app and go to the relevant page (maybe if you're lucky the app you're using can link you there at least), and then when you try to change your default browser it will try to push you to try Edge.
- In Windows 11, they went even further: you now have to change the default apps separately for every single protocol and file extension, rather than having an option to set an app as default for everything it supports. The concept of a "default web browser" that's easy to understand for the average user no longer exists.
- When Firefox decided to implement a hack to let users directly change their default browser with a single click, Microsoft decided to patch it because "it can be used by malware to hijack your default browser". Which would be a completely reasonable explanation if we ignored the context this is happening in, but they're making their ulterior motive painfully obvious.
- And now, they're going even further by injecting unwanted and unprofessional self-promotion into third-party websites without the user's consent. It's quite different from what Google is doing, because they only suggest you to switch to Chrome when you visit Google Search, they don't try to stop you when you try to download Edge or Firefox from Chrome.
I seriously hope Microsoft gets hit with an antitrust lawsuit again, they completely deserve it. Looks like they haven't learned from last time.
If MS really cared about security as they claim rather than competition, they could very easily implement a popup dialog that shows up when an app tries to change your default browser. Heck, maybe even make it part of UAC for extra security. That way, it would only take two clicks and be also far more secure than whatever they're doing right now.
Also, I'm not entirely sure about this, but I remember reading somewhere that MS is also doing the same on Firefox downloads. While Google may somewhat deserve it (though that doesn't make MS's behavior any less user-hostile), Mozilla definitely doesn't deserve it as Firefox already has a quite low market share.