I believe there can be a crypto-currency with better properties than Bitcoin.
Once one of these Ethereum apps finds their hockey stick, Ether will continue to play its role in securing the Ethereum network for this killer app which removes the need for both Ether and Bitcoin to play the role of crypto-currencies.
While you are distracted by one DAO, there are many other DAOs successfully in operation on the Ethereum network. There is only one that made a lot of noise because it had to, the others are silently building their products after raising money from a passionate set of users.