Just like speeding camera's
We have proof that you <exceeded the speed limit> infringed somebodies copyright at this time.
Please pay us £60 or face court action.
Cheques to us please.
Simple! The model is already tried and tested. It also gives the ISP's more of an incentive to pursue infringers as they will get their 'Admin' cut off the top.
This is the beginning of the end.