Altcoins are a pure speculators world. We've seen many "better" technologically Twitters - yet, the one with the fail whale survived as it had all the mind share. Bitcoin is technologically millennias ahead of cash, yet, cash is still the king. Same with Bitcoin vs Litecoin, let's say. Nobody cares if Litecoin is technologically a bit better - all Google searches have "Bitcoin" in them and it's here to stay unlike Quarkcoin, Junkcoin, BBQCoin, and the ten other wannabes and copycats. The world doesn't need two Bitcoins - it defeats the purpose. The world doesn't care what "cryptocurrency" is - the world knows "Bitcoin". China likes altcoins as they lead mining operations and they need to sell their mined coins expensively, but China's interest and World's interest and not always parallel.