BTC is not only the first coin but it has symbolic value for the entire crypto market, one symbol of the blockchain revolution.
Just like gold, there are thousands of metals produced such as steel, aluminum, silver, etc., which are widely used in daily life. but gold has always been the most valuable metal, still number 1.
So there will be no altcoins that can replace BTC although ETH, Sol, Tron or Xrp... have utilities, applications and technologies that are far superior to BTC.
I agree bitcoin is still the best of all coins in crypto, after so many years there is no altcoins replace bitcoin it means bitcoin is still the king and i believe that crypto market still depend on bitcoin based on my own experienced when the bitcoin is in stage of bear market altcoins will also fall so it means bitcoin still dominating the entire crypto market.