
Phone company plans always used to be pay-as-you-go. The development of unlimited use plans arose as a marketing tool to win more customers in competitive markets, and it eventually became a very common option in the consumer market (businesses almost always have pay-as-you-go plans). If this really happens, it won't take a rocket scientist to realize that any ISPs who stick to no-cap unlimited use plans will immediately have a competitive advantage over others (like [...ahem..] Comcast) who are likely to try to milk the new cash cow afforded by such changes.
The problem here is that the majority of ISP's have NO competition in a given area. It's difficult to compare Cellphone providers to internet ISP's such as Comcast and TimeWarner. Cellphone companies fight for your business because you have a somewhat decent choice of who to go with. Verizon, AT&T, T-Mobile, Sprint etc. In my area, Comcast has no competition. I can't get anything else, so why would they want to offer a fair deal, when they know they have customers by the balls. The ISP monopolies is one of the real issues here.
Have you reconsidered a computer career?