This makes the claim you sometimes see that guesses BTC might rise to $500.000 by the end of the year at least plausible:
(5.000.000 x 500.000 ) / 8.000.000.000 = $312 worth of BTC/inhabitant of earth. Even if only 1% of the population holds btc, it would only be $31.200 worth of BTC/holder. I see this as overly optimistic, but not completely impossible.
You nailed it. And remember that Bitcoin is not being distributed to all the people of the world, in the first place. I understand that this is just for the sake of discussion, and we have to remember that not all the things we are thinking will be happening in the real world. In case Bitcoin can be reaching the $2.5 million level of price, surely there can be a good spike of millionaire, but I don't think that it can create or will be the catalyst for a runaway inflation as not all will be converting their Bitcoin to cash and not all holders are residing in only one country.