Without argument that bitcoin is the king of all coins, it's the first cryptocurrency created and then produced by computers all around the world
I am very highly certain that they are going to be the king for a very long time and with the issue with the fees going to be fixed very soon, I am sure that its popularity and influence will linger on for a very long time.
Hopefully. Though bar a few fuds and corrections, like whats happening now, i think btc still has a long way to go and will have alts behind it while it's moving. Obviously since at the moment, even the convertions to dollars are mostly in btc.