They probably can but that will be next level escalation. Amazon is one of the biggest spenders on Google ads and Google drives a lot of traffic to Amazon, so this will materially hurt both companies. I don't see that happening very soon.
I wouldn't think so. Google got a $2.7B fine for showing shopping ads in search results, because it was an "illegal advantage". They would almost certainly say the same thing about deleting Amazon search results.
