Bitcoin has been steadily losing market cap dominance, from 90%+ just two years ago to ~80% today.
When it comes to exchange dominance it's just 66.4%.
This trend will probably continue and in a few years there will be people using cryptocurrencies that do not know what bitcoin is.
No chance.Altcoins are just pump and dump coins.Only Bitcoin deserves to be the king of cryptocoins.All altcoins were in need of bitcoins even to show their price value.
Even crypto currency coins also need bitcoin in order for them to have a value. As we can see, all pairs are against bitcoin which stands like a dollar in foreign currency. So like dollar, if U.S. economy's break down, all of countries are affected since it is a majore curency.