Once the investors of bitcoin get wealthy and ~~
That's a double edged sword.
Another way of looking at this is bitcoin can make a lot of people poorer, specially when they look at bitcoin as a tool "to get wealthy". What we call "weak hands" consists of such people in general. For example they buy bitcoin at $40k and then panic sell at $35k just because there was a correction then buy back at $50k just to panic sell at $45k.
I think it could also segregate the rich and the poor even more.
Even though investing in bitcoin with only little amount is possible, those who are capable of investing huge amounts will obviously be richer than the rest and those with no knowledge about bitcoin will get left behind.