Will not happen. Because the potential of bitcoin is still very large and demand for bitcoin every day keeps increasing. So it certainly will not be obsolete or anything else.
I do not think Bitcoin will be outdated or out shined by any other currency. It is rather the King of cryptocurrencies for it has come a long way and despite so many hurdles and criticism in the start, Bitcoin expanded and has been now embraced by so many companies and investors across the world. Furthermore, the future expected return is far more than all the rest of cryptocurrencies and it means Bitcoin is one of its kind.
Yeah I agree, also the only PoW Crypto with a truly enourmous decentralization and many years of being in function - most new coins are basically untested.
Do not forget these two points