The purpose of the BTC was not to be a monopoly in this market, otherwise there wouldn't even be this many coins emerging everyday. It's not the BTC's fault that the coins are not upto the bar that is set by BTC.
in the end you are just a group of people that has an oppinion and that spreads it because it has an interest in it. now. others can have too infact, humans are designed to never have enough of that.
so the question is since you already lost the index superiority, (coinmarketcap) media superiority will follow because it wont be in the interest of others to promote bitcoin.
you have hit a world where private creation of money was an unspoken taboo, money was supposed to be created for the purpose of achieving human rights goals. now you have diversified and decentralised it. which of course will create a lot of economic mismanagment.