Bitcoin would still be king, Bitcoin is king, and Bitcoin will always be king regardless of any little retared brother that comes thinking its going to take the kings place.
It depends if the bitcoin is controlled by a small number of developers and if they have support from the big community.
Bitcoin is not controlled by anyone, bitcoin is a network which is just running and has no one behind it functioning it, it depends on the people in the network if where they take it by using it, if all of them stop using it then it becomes useless, and if more start using it then it gets more valued.
If that were 100 per cent true, then the question to ask is if anyone is using bitcoin less because they have switched over to altcoin. I don't think this has happened. Altcoin users for the most still use bitcoin primarily. I only know of one site merchant that accepts exclusively Alt (ETH). The knowledge and learning from alt dev has only boosted bitcoin.