Any fines would likely go to court many times, before they actually have to be paid. And all those large corporations will show up with a huge mountain of lawye

Any fines would likely go to court many times, before they actually have to be paid. And all those large corporations will show up with a huge mountain of lawyers to try and get around any law that may exist. Taxing the large companies is difficult, because of individual countries (like Ireland and Netherlands) free-riding to attract investment, while hurting all other EU members. "Tragedy of the Commons" that sort of thing.