We probably have multiple alts that one could consider as better version of bitcoin but as you're noticing, bitcoin is gaining more popularity and a fast growth. The price is not a measure of a coin success so what I'm referring to here is the the number of ATMs, exchanges, stores, services, and people accepting it.
So even If we have some people using alts currently because they believe they are better then bitcoin (which may be true), bitcoin is evolving and the development is super active and exciting times are coming. I honestly believe that this make alts useless (say, by the end of the year), your thoughts?
As for me, you are very mistaken in this, the number of good Altcoins is increasing and soon they will become much more valuable than bitcoin, which just keeps on popularity. But the fact that the crypto currency needs to be developed further is a fact.
At the moment I see that BTC Dominance is growing, this indicates an increase in the bitcoin value. Yes, altcoins carry in themselves new technologies that are necessary for the modern world of crypto currencies, therefore these new coins will win their place in the future world. If the coin does not develop, then this coin will disappear, this even applies to bitcoin.