There are newer cryptocurrencies than BTC with better technology. However we often insist that BTC is "king" because of its "first mover advantage" and its greater adaption. But then USD has far far greater adaption than BTC.
Shouldn't we value more technology than adaption? Isn't it natural that in the end other cryptocurrencies with better technology will prevail?
If its really a good technology then people will like it for sure no matter what, look at how eth works now but then again since bitcoin started this thing many people would still believe on bitcoin. Time will come and good coins will either replace bitcoin or be next to it but for sure it will not happen within 10years from now.