Most UK ISP's have gone down that route for quite some time now.
I think what annoys people is not the fact that they have to pay for what they use, but that they get threatened and/or cut off for exceeding some limit that they aren't told about.
It's thought to be a contentious point of law, but I feel pretty sure that if they tried that in EU and were challenged, the ISP would lose out under unfair contract terms.
Additionally, I don't believe any court would uphold a contract where one party tries to enforce unpublished terms, and consequently any cut off would leave them at risk of being liable for damages for breach of contract.










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