It’s not in the chrome store, but Ad Nauseum. Between that and using the Vivaldi browser, I haven’t seen an ad on my desktop in literal years

https://adnauseam.io/

I heard someone call these kinda of people “fence turtles”. Nobody knows how they got up there, they don’t do anything useful, and they’re not likely to come down anytime soon

Like everyone else said, funding=/=ownership. I do suspect, however, that part of why these big tech companies fund Linux is because they rely on something built on Linux in one way or another. Linux tends to be the better options for things like servers, low processing devices, and more, and if they keep funding it, it continues to exist so they can use it. You’d be surprised about how much of the world actually uses Linux in some way.