Its very less likely to happen in my opinion, because bitcoin is the first cryptocurrency and it is the main source to trade into other coin. The presence of bitcoin is very strong.
True. Bitcoin is the first crypto currency that was ever created. The popularity of bitcoin lies far beyond the popularity of any other crypto currency in the market. Being the first decentralized platform, bitcoin has had strong hold on the market from the start. Bitcoin is highly anonymous and decentralized coin and is used highly in dark web for transactions.
Bitcoin still exists as the number one trading pair for other altcoins on many decentralized crypto exchanges. Therefore, the prices of altcoins are indirectly related to BTC and they usually rise and fall with the movement of bitcoin.