"It is not a big difference if you own 2 or 20 million dollars."
I don't know what you're talking about; that's a humongous difference. $2,000,000 will comfortably provide an individual for life, allow them to live incredibly luxuriously, fund multiple business ventures, and contribute philanthropically. Two million dollars is substantial equity that would pay off any loan or bills that come up.
$20,000,000 will comfortably provide for an individual, their family, their family's family, and beyond. It would fund any start up they could ever dream of. They would own land wherever they wanted and they would be able to profit more off of letting their money sit in a bank than they would by working. They could make themselves richer by stashing their money in offshore accounts and avoiding taxes they should be more than happy to pay, and that's exactly what they do. They can freely donate thousands or more to political candidates who pledge to assist them in any way possible. They can fund speculative interests that could make or break the lives of hundreds of people at little relative risk (what's a million dollars when you have 19 more?). They can push the system in the direction that makes them richer by throwing money at it.
$2,000,000 is successful and wealthy. $20,000,000 is kingly.
If we fixed our rigged tax system, which *only* Bernie Sanders would attempt to do, then kings would pay taxes too instead of stashing their funds elsewhere and using small sums of their fortune to ruin the lives of others for their own benefit. That's what they do today.
So, again, please tell me how there is no difference between 2 and 20 million.