What happens is simple, Bitcoin is the leading currency, the only way an altcoin can try to compete with Bitcoin is:

1.- If the altcoin have a backrest based on gold, oil, precious stones among others.

2.-  Compare the altcoin when you are 10 years old.

After that time has passed and after having passed through some stages of the market such as accumulation and distribution, it is possible to begin studying its future and as a possible competition vs Bitcoin, apart from seeing what community it has and what technology it offers.

Another way to see and compare is if the new currency could reach a life of its own, that is, it does not depend on the price of Bitcoin, as is the case with all altcoins,

It is something very difficult to expect, because you need a coin with those characteristics and with history, in addition to having a life of its own, that is why the possibilities are minimal. Bitcoin will remain the King of Crypto.