Yeah like there are folks who are worth 10ish million who just bought a house 50ish years ago that gained a lot of value and had dual incomes that saved all their money for retirement.

100 million folks are on THIN ice, but there is probably an author or inventor out there who made something really nice and everyone they worked with was also well taken care of. Most of them are probably garbage, but not all of them have to be. Some famous actors also were well known for making sure everyone got paid what they deserved on set and were very generous.

I just don't see getting to a billion without someone being taken advantage of on the way though.