I believe that many altcoins will die off due to week fundamentals, all the weak projects, meme coins and speculative tokens will vanish over time. Bitcoin is more entrenched than any other crypto that's why I believe that it's strength will make sure any crypto that actually survives, must justify its existence
Variety is the spice of life, and Bitcoin is king of cryptocurrency already but will not totally kill all other crypto projects but some which do not have real world value. I believe that Bitcoin will definitely continue its dominance over other cryptocurrencies, but will co-exist with some
withcryptocurrency that has a utility case, However I do think there's definitely going to be a time when we may have just few crypto projects left in the futurel especially those that has problem solving and functional in the industry.