That’s my point. We (those of us that aren’t at least millionaires) don’t really differentiate in society between someone that has a million dollars and someone that has 10 million dollars; they’re both stuck in the “millionaires” tier.
So say you are making $50,000 a year, well it’s easy to see how you or someone like you could (theoretically) get to $100,000; that’s just the next tier up. And then it’s easy to imagine someone going from $100,000 to a million because that’s the next tier up again. But once you get there, people don’t tend to think of ten million as a tier and usually not a hundred million either. The next tier in our zeitgeist after million is billion.
So people tend to think of billion being kind of the same as going from $100,000 to $1,000,000. Hence the common disconnect about just how much more money a billionaire has than the common man.