Back in the day, I worked for a certain Regional Network - back when the Internet was more limited to Big Science and Big Education. (This Certain Regional Network ran NSFnet 2 for a while...)
Back when the State of the Art for the internet backbone was T3 circuits. (Yes, and it was uphill both ways to and from school when I was a kid too.)
Back then, it was noted that 25% of both our regional network traffic (and, I think, the NSFnet traffic) was management traffic - routing data, logging data, and traffic statistics data. I.e.: metadata. Data about data. And it was also remarked (about the clueless Baby Bells of the time) that 50% of your bill was to pay for billing.
My incremental use of the Internet doesn't cost my ISP anything. But BILLING for it does - because not only is there the added infrastructure overhead of collecting the data, there's ENORMOUS overhead in a usage or access based billing process itself - complete with mechanisms for all the special deals, etc. that marketing dweebs come up with.
Clearly, I'd rather ISPs come up with mechanisms to allow to pay for your minimum guaranteed bandwidth - rather than the maximum.
I think that if Verizon really does go through with things like this, it'll only make efforts like GigU and Google's metropolitan area networks even MORE competitive, as Verizon will be crippling their own offering.
But I don't really want to put up with the interregnum before GigU and Google roll out to my neighborhood.