I think that's a good point. Google knows nobody is reasonably able to do better. So they are free to optimize for ad revenue, and leave organic search "just

I think that's a good point. Google knows nobody is reasonably able to do better. So they are free to optimize for ad revenue, and leave organic search "just good enough" to stave off anyone else. In fact, great organic search could lower ad revenue. I imagine there's some balance there.