Currently, I don't think that any coin can pop up in future that will take over dominance from bitcoin because bitcoin has already achieved a milestone that no digital currency have achieved one-tenth of it. Don't forget that it's because of the problem that bitcoin is solving that is leading to its adoption due to her decentralized nature and censorship resistance. After bitcoin was created every other coin that was created after bitcoin was unable have that uniqueness of bitcoin because they are centralized and the dev created these shitcoins to scam people from their hard earned money through pump and dump.
I gree with you on this, because currently I don see me too don't see any shitcoin pumping in the future that will take over dominance from bitcoin, normally I see other shitcoins as coin's that is just getting started, while bitcoin has already achieved a milestone that no digital currency have achieved even one tenth of it. Bitcoin is Very unique and the reason for mass adoption of bitcoin is because people see bitcoin as a safe heaven for storing wealth. Bitcoin security is the security you can strust, bitcoin is bringing the world together, only the benefits of bitcoin to the global economy is enough reason for you believe that bitcoin remains the king.