The value of altcoins are determined by the value of Bitcoin. Do you think one day altcoins can break free from the Bitcoin strong hold?
Not at all, even with all of the number of altcoins in the market, bitcoin has still managed to dominate all of them, their values are still dependent on the price of bitcoin. There is no way that the altcoins are going to topple bitcoin. bitcoin dominance just keeps increasing with time and the only thing that the altcoins can do is to follow the lead of btc