Flat rate means that the user ends up paying an average 25c/gb in the United States.
5c/gb doesn't sound very bad in that context.
Flat rate is also the biggest contributor to a lot of poor internet service. Providers (cable,dsl) will start selling service at a given speed then oversell it until it's crap. The incentives are all out of whack.
For the 93% of the country without fiber to the door the 2018 FCC report shows that nearly 70% don't see their advertised speed during peak hours.
It would suck for heavy use 'whales' like me, but most consumers would save money since they'd no longer be subsidizing my behavior. The selfish part of me is pretty comfortable with this status quo.
