[quickthrower2]

> This is the sort of problem that solves itself.

Unfortunately it doesn't. If you've ever watched the UK TV series "Watchdog" you'll see time after time people set up businesses, rip people off, go bankrupt, rinse and repeat. Game theory trumps economic models here - and the rules of the game are whatever loopholes these people can find.

To be fair these cinema clowns haven't done anything much worse than a 'fair usage policy' on a mobile phone offering 'unlimited calls' would do. They were sly about it rather than upfront. They could have just introduced new terms as of the next payment. But the general point is about the free market sorting this sort of thing out doesn't work.