In this concept or ideology, its obvious that bitcoin is the father's of cryptocurrency or any other coins, other coins like ETH, litecoin and so many coins to be mention are under bitcoin, and its very clear that  bitcoin gives other cryptocurrencies life for existence, so bitcoin will continue  dominating any other coins also continue to be valuable than any other coins. Sub coins are alternative coins and they not be use to compare to the potential of bitcoin, and lack potentialities been alternative coins, and that makes so many of them to have shorter life.