I think bitcoin will lead the currency market because it was created as a way for people to send money over the internet. There are many advantages of bitcoin like Direct Transfer, Greater Liquidity, Security and so on. Bitcoin's maximum supply is limited to 21 million coins. Cryptocurrency gains value when demand rises higher than supply. for that i think bitcoin will lead the currency market in near 5 years. Which currency you think will lead?
Of course it is Bitcoin. Altcoins are affected by the price of Bitcoin and any copy of coins in this crypto hence called alternative coins. Sure, the technology on other altcoins could be used in the world but still as the leader people most likely know about Bitcoin when they search about cryptocurrency in the Google Search Bar. Also, the price keeps rising so it does become the lead of other currency there.