what!? Why do you think in the future there won't be many people who will be able to own or buy a bitcoin, or even a fraction of it? What are you really implying? Is it that Bitcoin will be very expensive and no one can buy it? or is it because Bitcoin has a limited supply? If those are your reasons, then you are wrong. Even if anything else is your reason, you are totally wrong.

Bitcoin may have a limited supply, but that doesn't mean that it won't continue to circulate from one individual's wallet to another, either via service payment or a buy process through P2P. The reason is that, in the future, there is likely a possibility that more people will accept Bitcoin payments as an option. Already, there are many people who accept Bitcoin as their other means of receiving payments. That's the first reason why Bitcoin will not be difficult to own even in the future.

Second, there are people who bought and are still buying the dip in Bitcoin and holding it so tight with the aim to sell probably after a decade or two decades when the price has increased so much, and by that time in the future, there will be people who will still be buying Bitcoin.

If you also think Bitcoin will be very expensive and not many people will be able to buy it in the future, don't also forget that Bitcoin in 2009 was not even up to $1, and at current, based on the ATH, 1 Bitcoin traded for about $68k, yet there were people buying at that price, which means even if 1 Bitcoin is sold for $500k, there are people that will still buy.