Firefox was also extraordinary for the price. point being that Google has never been the only option, just the most popular because why not your gmail is already plugged in.
Firefox existed before Mozilla's contracts with Google. Firefox was actually funded by AOL (to the tune of a couple million in sending off money when they shuttered Netscape) and Mitch Kapor (hundreds of thousands because he's a great guy who saw the potential) with some other donations from IBM, Oracle, and a few more big tech players.
No, Mozilla is 90% funded by Google ads. Mozilla does a ridiculous number of non-browser things. Konqueror and Navigator existed long before Google ad funding.