How about the top 10,000? How about any wealth you personally have? At what point does it stop being OK for you to take people's wealth? When someone becomes a billionaire?
This reminds me of when Bernie Sanders was asked why it's OK for him to be a millionaire and he said something akin to "If you write a popular book like I did, you can be a millionaire too." Well maybe if you reinvent electric cars and space travel or build a company that ships you almost anything you can think of within 2 days then you can be a billionaire.