There are more than 6,500 digital currencies last time anyone checked. Not every one of them is similarly attractive obviously, similarly as not each of this present reality's monetary standards are on a similar balance.
To know about the bitcoin potential, you need to know why people invest in bitcoins.
If you see the marketcap and dominance, you will find that bitcoin & Ethereum share almost 60% of the overall marketcap of crypto. The rest 40% is divided into 6000+ coins. This shows that people have more trust in btc & eth and they are more comfortable in investing in them a compare to any other cryptocurrencies.