Why would they impose a 20M limit and not stick to 4% revenue irregardless of it...

edit: I'm not sure that the down voting is about.. it's still a limit, a limit that means a company turning over 0-500M will pay up to a 20M fine.. not so bad the closer you get to 500M but not so great if you're a small company, especially so as the regulation is so open to the "law of unintended consequences" right now and only larger companies will have the funds / man power to navigate it.