think about it this way.
bitcoin has only 16.5 million coins currently in circulation.
it will have 21 million max.
the demand is increasing day by day by many investors and a lot of businesses all around the world are adopting it as a payment method (despite all the drama).
it has the longest age (8 years)
the most number developers which are pretty good at their job.
it was created with the purpose of being used as a currency not to make money. and the goal was also decentralization.
(i can't remember more at the moment)
if you know any coin that has any of these. then yes that coin can reach the stage that someday be as valuable as bitcoin.
Every coin that was created after inception of bitcoin id not an experiment anymore but conscious attempt to grab some cake.
Old shitcoins won't be good, ever.