ISPs have made the bed
and now they need to sleep in it.
They've been offering ridiculously cheap broadband contracts and are now finding themselves tied in for a year while consumers start using more and more of the bandwidth they've been sold. And now the ISPs are whinging because they're actually having to provide it?
The ISPs shouldn't be advertising unlimited bandwidth at up to 8Mbs when they're not willing (or able?) to provide it, regardless of the infamous fine print and fair use policies that slip in.
I'm with the BBC on this.