If bitcoin becomes million dollars each, or litecoin goes for 500$ and dogecoin goes for 1$ the sheer number of fiat millionaires it could create in the world could be thousands..
Is this socially possible? yes lot of people have become lot wealthy with lots of bubbles in past, the dot com bubble is a classical example creating lot of millionaires.
So what happens to the world if millions of millionaires are created all of a sudden?
will governments and rich people who have a lot of influence over the world(like Bilderberg), allow that to happen?
I don't see any problem with more users and adoption resulting in more millionaires as it becomes more and more popular
It would be riveting to see how it shapes the future.
That said there would probably not be that many millionaires as in one form or another wealth will be lost in the process
Example some people who forgot about their coins for two years would be wealthy today if they had 100 of them but if they were following the market from 2011 then they were likely going to lose money by selling at lower peaks and not rebuilding their base.
So while it is socially possible individuals will likely take profits far before that point is reached after all assets have a time value component and duration is important.