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.
I agree we can/should decide collectively. But when the vast majority of Americans have a place to live, air conditioning and heat, a refrigerator, enough to eat, etc. it's hard not to say that they're comfortable. As for fulfilling, that's describing a utopia.
I recognize there are still people who are food insecure, and I think it's an abomination how people are suffering (many poor rural black people in the south don't even have access to basic plumbing and end up with diseases like hookworm), but making wealthy people into a boogeyman just seems like an emotional argument so much of the time.