I agree with the above post... Why the hell did they give such examples? I've searched for altcoins quite a bit of time and I haven't really seen one that can overtake Bitcoin. Litecoin is good, as it is very similar to Bitcoin, but that's pretty much it.
Ethereum is one of those things that I never really understood. They do have good ideas, but that's pretty much it, ideas. I'm not even commenting on Ripple, and the last example I didn't knew about... I don't see people wasting electricity for ZERO reward. Why would and why should people mine for no reward?!?
The only altcoins that seemed promising are either stuck, or don't have the manpower...
i think that something will overtake bitcoin is
very unlikely at this stage.
if you are the number two crypto (Litecoin) you already did a great job. Litecoins main attribution is that is has the second biggest blockchain and it could be a backup for
BTC.