I bet that many bitcoin holders doesn't have that much in their bank accounts but look at their portfolios, it's exploding in gains.
I think that many holders have in common and as we say to others to DCA, they're putting where their mouth is. Accustomed to frugal kind of living for the sake of accumulation.
And as we DCA, it takes a lot of patience, sacrifice and delayed gratification to focus on that goal. We don't buy so much material things and before being respected by others, you'll have to give respect to yourself because you know yourself better than anyone else.
It is not even about frugal living, it is just about getting a system and working on it. I grew up with the philosophy where you put 10% of your salary on the side, and while I did sell most of my investments over the years due to bad things happening, at least I had something on the side. In that case, you are free to spend 90% of your salary on anything you want, you can literally burn it on fire, doesn't matter. That's not the point, it's yours. Spend it any way you wish, on smart things or stupid things.
However, if you save 10% of every dollar you make, and then invest it smartly, then you will retire at age 40 to 45. My uncle did it, and he retired at 48, so it is not really a bad idea, and you could definitely get great wealth out of it in time.