This whole thread appears to boil down to a multiplication table. Also there is no normality assumption, because the sum is over all the coins. The multiplication table still holds even if one person has all the coins.
Yes, if one person holds all the coins they determine the "price". It would be whatever they sell them for. I agree it is a simple multiplication table. It is easier to get intuitive estimations of number of users and average holdings than price, price is more mysterious at first glance. We could make the same chart for USD vs anything, cryptos are special because we do know the upper bound of how much is in existence.