> if you could spend 0.04% of your net worth to protect 5% of your net worth

If I was anywhere near being a billionaire I wouldn't. There would be much better things to spend my time and effort on. That's not even counting the fact that I would probably care about the ethical aspect too.

0.95x of an obscene amount of money I can't spend is still an obscene amount of money I can't spend. That 5% wouldn't make any discernible difference in my life.