I am looking at bitcoin value now so it is saying difficult that we can give the importance of bitcoin to altcoin
it has nothing to do with price of bitcoin. otherwise there are other altcoins that are actually worth a lot higher than bitcoin but they still remain useless.
it is always about the utilities that bit coin is providing that that is giving it the real value and the potential it has. other altcoins lack this potential mostly because they are created for pump and dumping purposes.
Like Herbert correctly pointed out, its not about the price. Platinum is not going to replace Gold for jewelry even if its price is higher
On the utility side I don't agree with you Herbert, the only utility that bitcoin provides, it is the most trusted value storage in the crypto sphere, maybe even in regard with FIAT currencies
While this is a very important utility, in my opinion Bitcoin has no other use cases. It is not very efficient as an exchange medium (expensive and slow) and it has no smart contracts and similar applications. For that reason there is a need for Alts and for everything other than value storage (here Bitcoin will remain King) Alts have or will replace Bitcoin.