Bitcoin will remain the king forever! think about it: Bitcoin is the only cryptocurrency that hasn't a owner! Bitcoin is for everybody... Other projects have team members who not only control the vast majority of the funds but also take directly decision about the future of the project. I think that any cryptocurrency that is not truly decentralised like Bitcoin cannot be the next king. Ethereum is the second coin for market cap only because it offers smart contracts to its users... but ETH is controlled by Buterin and other people.