I think the answer to the question as to what coin will dominate all depends upon the support and use of the coin holders. If the cpin holder support such coin and if they would find it very useful or helpful to them, certainly it will create a name for itself and eventually be the king of all coins. But without such support and usage it will never replace the veteran bitcoin.
Support of bitcoin holders is very important. In any business or investment it depend on investor support and interest and then it grows. Without support everything is incomplete. With support everything is possible. Without support of user bitcoin wouldn’t be the king of crypto currency. But there are people who invest in bitcoin and support it.