said by Frank :

in 1996 the vast majority of internet users paid for internet access by the hour and used dialup connections. Any overusage meant you had to pay really expensive fees. The entire reason this stopped was because of competition, most companies which did not adopt the 'unlimited usage' model went out of business. To me this is a step backwards and I forsee many more isps stupid enough to implement this going out of business.

This may work in canada because bell canada practically has in my opinion what I would consider a monopoly but i'm pretty sure that there are marketing teams for various isps in the US that are just salivating at the type of commercials they can run against the first major isp in the u.s. to be stupid enough to try this.