Google's revenue is largely from promoting scams and tricking old people into clicking ads that look like normal search results. They're a total scumbag company, it's a sign of how broken consumer protection is that they've gotten away with it for years with no meaningful legal consequences.
[EDIT] Downvotes are warranted, I missed the large part of their revenue that comes from extorting companies into paying for ads for their own brand name so competitors and scams don't top searches for them.