Considering there are thousands of coins and tokens out there, what sort of dominance should Bitcoin have which shows that even though it remains the dominant force there is still a lot of space for others to narrow the gap?
Currently the BTC Dominance according to CMC is: 62.6%
I think there is a shortage of coins that can explain his project and himself very well. So, as you said, there are thousands of coins in the market, and Bitcoin only represents a large part of the market. I think it's more about coins than Bitcoins. At least 1000 of them are completely meaningless projects. The rest must prove themselves under market conditions. Thus, investor preferences will shift in this way.
It is those meaningless coins you refer to that have little impact on BTC dominance percentages but rather the others. If everybody buys Bitcoin then dominance increaes.
My point was what percentage dominance would be ideal for Bitcoin to have which allows it to be stable and healthy but allows competitors a chance to try to play catch up.