https://prnt.sc/j8ij29as we can see the bitcoin dominance is getting lower and lower and i think on long term ethereum will end the dominance
I am not sure where you see that as right now the BTC dominance is back to 52.4% and Ethereum has fallen back from a peak of 30% to 10%.
Clearly room for recovery of ETH but I do not see Ethereum or anyone else really challenging Bitcoin for the top spot.