Bitcoin will always be the number one crypto in coinmarketcap or in any crypto ranking site.
We already know more about that mate, we are trying to know the reason or reasons behind it dorminance in the world of cryptocurrency. First and foremost, it's the first decentralized digital currency among others that brake the ground for cryptocurrency communities to be know, and also, it's privacy has no rival as such many investors and gambler's are in love with the coin. Bitcoin is the first name you come to know before venturing into the world of cryptocurrency.