Bitcoin has survived so many 'better' Altcoins. Where are such Altcoins now, just look at Shitcoins like Tron or EOS - useless.
Thou, Bitcoin, tron and EOS happens to be all decentralized coins who has it's independent blockchain, but it will not be idea enough trying to compare Bitcoin to these two altcoins/shitcoins, because Bitcoin was the first cryptocurrency, has the highest ratio in the total marketcap, highest trading volume and has been in existence 13years now, unlike Tron & EOS which both got launched 2018 (just 4years ago). So with all common sense, Bitcoin still remains the king of all cryprocurrency