why is it so difficult for other cryptos to have the same potentials as bitcoin , are they missing something?
How they were created can explain it for you.
Bitcoin was created by Satoshi Nakamoto, a great mind with excellent developing skills, to create something that can change the world and bring blockchain to daily life.
Altcoins were created by not great mind behind, mostly with Get-Rich type of motivation and see, you can not expect great products from those people. Some succeeded like Ethereum with Vitalik Buterin but most of altcoins died and that caused many people lost money with altcoins.
Altcoin enthusiasts can feel great by calling themselves like this, but with time, most of them were betrayed by altcoins and incapable founders and developers. They hope that if they have a second chance with a time travelling machine, they will choose Bitcoin, not altcoins.
Failed altcoins.Why 99% of altcoins failed?