It appears that "income taxwise" the difference between $1M and $50M is significant depending on rates vs. deductions. I know that Ducks Unlimited is pretty spooked about the limit of $50k on deductions as it will hurt them. The really rich are not like the rest of us, it seems.
When the State of Alaska repealed it's individual income tax some years ago, one of the reasons for keeping it was its ability to help certain groups (by allowing certain deductions). For example, allowing deductions for campaign deductions-surprise. Heheh!