Although we know that it is possible to buy only a fraction of BTC, I think that many see their possible investment in the context of the price of 1 BTC. No one disputes that it is possible to buy only $ 10 worth of BTC, but that is only 0.00020300 BTC, which at some points may not be enough to pay a transaction fee.
We can’t escape the fact that Bitcoin is becoming something that becomes available to the rich (when we talk about quantities) because they can afford to buy it no matter the price. If their interest continues to grow, I have no doubt that the vast majority of BTC will end up in their wallets because ordinary people will sooner or later decide to sell - let's face it, most are only there for profit.