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.
There are so many Altcoins in the market that are so more efficient than bitcoin but they wouldn't be able to replace bitcoin because bitcoin like you have said represent the revolution of cryptocurrency. And since it is the first cryptocurrency there is no way that these altcoins in the market would be able to take over. All they can do is improve themselves in ways that bitcoin is lacking but that doesn’t mean that they will be able to replace it.
Bitcoin will still stay as the number one coin that we have in the market. Most people prefer bitcoin than investing their money in altcoins. And moreover majority of those altcoins are just shitcoins. So, people don’t waste their time with it, except for a short-term if they do.