If you have the top market position already in browsers and search, pretty easy to get people onto a product like this regardless of whether better alternatives exist.
> Are you sure they lost?
Well, Chrome and not Microsoft's browser is the dominant webbrowser, and at the heart of MSFT's anti trust case was bundling Internet Explorer with Windows. So, yes. MS did lose.
But since then most cases have been nothing more than slaps on the wrist? Have any major companies faced dire consequences for their anticompetitive practice.
So why would they stop using their market position in ways that benefit them and at worst result in minor fines or wrist slaps?