Is it possible to happen? Altcoins crushing bitcoin in terms of price, trading, etc.? I am just curious about all of your thoughts, so don't hesitate to reply and get yourself justified 
This is for all of us to gain knowledge between ALTCOINS and BITCOIN.
The only competitor of bitcoin could be Ethereum, especially when it rapidly gained its popularity in early 2018. This is for all of us to gain knowledge between ALTCOINS and BITCOIN.
Though now we can see the opposite situation - the price btc slowly goes up, but the price of eth stays below $300.
This testifies for the fact that bitcoin is still more highly demanded than any other alt.