Bitcoin is still the king of cryptocurrency and the rest are just alternative coins. All the profits of this altcoins are just the faucet for the bitcoin to go strong. I do not really know what is the scheme for bitcoin and other altcoins but i bet that these altcoins are basing bitcoin market price movement. And that is why bitcoin could never be dethrone by other crypto but altcoins could achieve what bitcoin has achieve and i am seeing ethereum has a lot of potentials but it cannot dethrone bitcoin for now.