I think this just isn’t how Google work. I would expect to see a lot more spam if Google were happy to collect money from advertising on spam sites.

I think that as Google became more complicated, bigger, and ML based the average Googler begins to understand the system less and less well. At a certain point a problem comes up and they just don't know how to solve it that well or their bureaucracy makes solving it to painful or the people who solve problems quickly have all gone to companies where they can do that.

… on the short term.

Does the market care about anything else?