let´s look at other factors of dominance, not market cap (which is so easily manipulated, that it does not proof anything).

let´s look at how many goods are bought with bitcoin compared to all other altcoins.

let´s look at how many merchants accept bitcoin compared to all other altcoins.

let´s look what crypto is used for cross border payments.

let´s look how many bitcoin-start-ups are existing compared to all other altcoins.

i bet in every single comparison, bitcoin dominance is still in the 80-90% area.