I've often had this chat with the podcasters that believe that theirs is a divine right to have others subsidize the resources for their material gain. Shared hosting is the gamble for all providers,  web hosts,mobile  and gym memberships alike.If  they get it right we're all happy. If not your calls drop, you can't get on a running machine and your hosting crawls  to a halt. In a sane world you just cancel and find a company that didn't get that calculation wrong ( if you signed a long term contract without a service guarantee  .. oops )   Anyway  here's a good article on why the best solution to this issue is a free market one ( Please don't let me give you the impression that such a thing currently exists in the USA)

Against a National Broadband Policy - Mises Institute

Simultaneously, the current opaque pricing structure and vaguely stated limits used by many ISPs arguably compounds the problem by encouraging customers to overuse "the bandwidth commons." In fact, according to Time Warner Cable, 5% of Internet users use 51% of the bandwidth and 25% use 85% overall. Yet, everyone is charged the same, or in the words of NetCompetition.org, the average user subsidizes bandwidth hogs