Had Firefox been coming from a company that could be bought, it wouldn't have remained available to hit that 10%, and MS would have retained their chokehold on everything, possibly until the iPhone became significant (that arose from Apple, which MS literally invested in to be able to argue they still had competition).
MS today is indeed a different beast - but I've never been convinced the antitrust suits were misplaced. The market of competition was _broken_ and consumers suffered. Even if breaking up MS wasn't required to eventually rebalance the market, that doesn't mean all the steps along the way did nothing.
Never heard of this. Do you have a source?
Thanks to antitrust, they weren't able to force (as much) their garbage IE and Bing. The market was able to confidently invest money in creating other browsers which created better products.
Granted, that was over 20 years ago...