Nano is an interesting example for a future FairCoin: no premine except for a small 4.5% set aside for core team and bug bounties. No mining. No further dilution. Almost all coins were distributed quietly via captcha faucet to ensure wide initial distribution.
If decentralized apps become the dominant use of cryptocurrency, Ethereum has two main moats: 1) API moat for developer ecosystem and 2) end-user moat around use of Toshi/MetaMask wallets. All would-be challengers will need to overcome those two early advantages.