I think it should be all the money you made from the crime + punitive damages based on a percentage of the total amount of money you stole/defrauded.
It just needs to be completely unprofitable to break the law, in any circumstance (it doesn't necessarily have to be a financial crime). If the fines take away less money than you make continuing to break the law, that's just the cost of business. The punishment need to actually deter the crime by making such crimes unprofitable.