I rather want to see that there is no single wallet holding greater or equal to1BTC so that we can say that we are really approaching mass adoption which the BTC main objective.
There will always wallet holding more than
BTC1, for example; addresses that belong to satoshi or exchange's wallet.
Probably in 20 years later, fewer people hold more than
BTC1 and more people adopt bitcoin, but I can't say bitcoin will ever be the main objective.