Take the number advertised on the Forbes list and their self reported number. Tax then according to which is the higher.

Tax unrealised gains on holdings annually not on realisation. Tax banks for giving loans against stock holdings, with rate of interest under 2%.

You can put it in a script.

I don’t want my kid to be a doctor. Why would I want anyone to be over worked, under paid, under appreciated and always blamed for everything under the sky.