If you can make 200M and have a risk of paying 100M in the worst case you still make 100M more than you would without doing it. So it's basically calculated risk for these companies.
And therein lies the problem with most methods of government regulation. The worst that happens is usually a fine. Certain violations need to start carrying mandatory jail sentences.
Not more than you would prefer to make the 200MM and risk losing 100MM of it.
again calculated risk, if theres even a chance that they walk away with all 200mm, and no chance that they end up with 0 or less, then it's worth pursuing.