If that happens, maybe the market will look chaotic. Because if the bitcoin is replaced it means that bitcoin is the same as falling. But if there is a coin that replaces bitcoin, then another coin has a power that will replace bitcoin.
I think Altcoin has offered all kinds of gimmick features over the years, but 95% of people are not interested in using this feature at all, which again shows that there is no such thing as an outdated Bitcoin.
Bitcoin is simple, and that's what people love. People want to store value, move value back and forth, and if possible, at low cost.