Windows was the only viable OS at the time, and when Microsoft forced OEMs to include IE and blocked them from making deals with Netscape it triggered that whole thing.
Here Google is just a website on the internet, granted it's a significant website but so is Facebook, and you don't have to go through Google to reach Facebook. My point is that Facebook is a large entity that exists alongside Google, and so does Twitter and many others so it's not a one vendor market.
Netscape was the leading browser when IE started being bundled. I don't disagree with you, but I don't think that argument makes a lot of sense.