Probably not in the next 10 years. Ethereum took 2 years to come out ,and its just a pile of crap, with all the hacks and scams going on there. (not to mention the hardforks).
i could ignore all the hard forks, the hacks and all that but there is no way i could ever ignore the fact that it is centralized and manipulated coin.
Best candidates would be:
LTC = Which is a copycat, so probably not
NMC = Which doesnt really serve as currency
MONERO = Probably high chance, but it doesnt even have a GUI wallet yet, so better make that come out first.
if any altcoin has any chance it is LTC because it is old, battle hardened and is being actively developed.
i am not really following NMC much but i agree with the Monero that it has a pretty good chance.
Other than that, there is no viable competitor to bitcoin ,and probably wont be for the next 2 years, and to beat bitcoin...? That would take a lot more than that!
i don't get it, why does anything has to "beat" bitcoin