I don't see why not. Having Amazon on Google is clearly an advantage to Google because people go there to find stuff, so maybe Amazon should charge google for b

I don't see why not. Having Amazon on Google is clearly an advantage to Google because people go there to find stuff, so maybe Amazon should charge google for being listed on Google. Then Google can charge Amazon for listing them more prominently. That makes Amazon even more popular and therefore valuable to Google to list, so Amazon can charge them even more, so then....