Almost all altcoins rely on bitcoin when it comes to the price so I think its very important that bitcoin should always be on the game. As we can see whenever bitcoin goes up or down the altcoins gets affected so it means that without bitcoin altcoins wont survive because people will think that crypto will end if bitcoin wont be that valauble tonpeople anymore.
Man, probably the day when Bitcoin will be out of the game will come, and Ethereum will replace it on the market. I suppose the other alts will survive then.