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?
For me it is very impossible that bitcoin can be replaced by another cryptocurrency. Bitcoin is really powerful and it is continuing to gain more power. No altcoins can stand up and can replace the bitcoin. Also many people prefer the btc than the altcoin.