i do this question because i´ve read in this website issues with bitcoin, slow mining process, high fees, etc. and i´ve read too good reviews of some altcoins, ethereum (smart contracts), ripple (for transfers between banks), dash and nem. these altcoins called 2.0. could bitcoin become just in future virtual gold reserved to companies and rich people?
bitcoin can be replaced by other because network can be busy fast.
some altcoins like Ripple and Ether can replace bitcoin easy.
bitcoin can keep its first place investment way.