Wow. Lots of armchair quarterbacks who have no real concept of what it is to run an ISP from a business (and quite a few comments have no idea on the technical side either.)
I used to be involved in a smaller ISP. Costs are already working against them when competing against larger providers due to the peering arrangements, etc...
Just to list a few things as to why this is a "good" thing, as otherwise it just hastens the demise of the small ISP:
#1 Enterprise level billing systems for internet providers cost a lot of money. The more regulations/rules/requirements the system has, the (likely) more expensive it will need to be. In my past experience we "rolled our own", but, this isn't feasible for most in the arena for many reasons and in hindsight it was a bad idea for liability reasons.
#2 99% of users would save money on a metered plan if fairly priced. 1% of users use 99% of the bandwidth. However, most people would rather have an "unlimited" plan, even if more expensive because they have no real concept of what bandwidth and usage are and how to control that.
#3 Smaller ISP's are unlikely to have peering points at places like MAE East, etc and far more likely to have to purchase their bandwidth from a larger backbone provider. This means that the "cost" for bandwidth is far, far more for a local ISP. It also means they have to oversubscribe more than a larger provider to pay the bills. EVERYONE oversubscribes bandwidth sold vs. what they have, it is just different levels.The economics don't work for smaller internet providers in reselling bandwidth if the oversubscribing rate isn't above a certain percentage.
#4 the 1% of users that use excessive bandwidth can be easily mitigated by rate-shaping certain types of traffic to a lower "speed", or any number of ways that don't impact 99% of the users.
The proper way to handle this is to remove net neutrality, make it so that local cities, etc can't grant a monopoly to certain companies when running cables so anyone can do so (probably cities, which is best esp. if they resell the raw transport.)