Bitcoin has great control and influence over other crypto currencies. Honestly, I can't imagine if this bitcoin must die. Now, all the prices of crypto currencies depend indirectly on the fluctuations in the price of bitcoin. Of course if bitcoin dies then the other crypto currencies will also partially die and maybe some of them will remain alive but at a price that has fallen so bad throughout this century. And when bitcoin dies, the market will need a long adaptation and other crypto currency coins, it will be difficult to restore its position to normal.