> I suppose there is nothing inherently wrong with someone being paid twice for the same service, although it comes across as incredibly greedy, but the end effect is that consumers pay more and the ISPs get more profit, because the content providers' costs will be passed on to consumers.

Well there are obvious conflicts of interest here. Many ISPs are also content providers. E.g. Comcast has xfinity TV streaming which competes pretty directly with Netflix.

So if Netflix has to pay an exorbitant amount to link a server to Comcast but Comcast can stream stuff to their customers basically for free...