There is a high probability that this will never happen at all, because I constantly look at the market and it definitely shows the same thing, and there will definitely be nothing bad, because BTC will always be there and it will be developed further.
Bitcoin could get developed further since most Altcoins are not doing anything to replace it.
I do not agree with this opinion. In my opinion, it is the emergence of strong competitors, since ethereum makes bitcoin develop. We saw the emergence of a lightning network and smart contracts for Bitcoin using Rootstock.