From their position of power they don't need anymore to prevent users from installing other browsers; it's enough for them to continuously pester the user with annoying requests to make their own the default one until the user surrenders. For 99.999% of users, a browser that doesn't load by default and a browser that is not installed are essentially the same thing.

Any push back against allowing a user to do whatever the user wants is the same thing in my book. Microsoft has recently made it harder to use non-MS browsers.

If you want to play a game of semantics, then sure, point to you. If you want to just have a normal conversation about users doing what they want, then I'd say you're outside of the lines on that last shot.

Netscape Navigator, probably. I don't think Mozilla was around quite yet, certainly not Chrome.