The wheels of justice don't turn at all once you reach $1B or so. Their speed is essentially inversely proportional to the net worth of the individual under scrutiny. And if you're really rich you get to buy your own laws through a thing called lobbying. So you will get even more rich.
After this is all over, we probably need to do something about presidential pardon power. Getting a constitutional amendment through is hard, but I don't see another option.
A different understanding of the extension of the presidential pardon when it creates a conflict of interest from the SCOTUS would be one possible path.