Earlier quoted context omitted.
These individuals can easily call up banks and get a loan on their worth. "Hey, Morgan Stanley I need 2 mil deposited in my account" - "ok" This is also how they avoid income tax. ;) They can take in millions and it's just a loan. Then they pay it back off with stock or other asset deals.
You might be able to move around when you incur income tax a little bit that way, but you can't avoid it.
Ex: Supose you have 100$ your tax rate is 15% and you get 5% in interest. Pay 10% now you have (100$ - 15$) * 1.05 = 89.25 next year. Swap that order 100$ * 1.05 - 15$ = 90$ Next year or a ~7% tax break.
Push it off long enough (without interest or fees) and you pay arbitrarily close to 0% tax rate.