The "explosion of clones" happened long before the most recent price peak of bitcoin so you are barking up the wrong tree.
Tippit gave a good reason which he called the "network effect" (
http://www.internationalskeptics.com/forums/showpost.php?p=12146596&postcount=1558). People who are currently holding a fortune in bitcoins are unlikely to switch to another (probably more uncertain) crypto without a good reason.
Limited transaction volumes and high transaction fees are the current problems with bitcoin so any "replacement" crypto would have to provably overcome this. If we want a crypto that people are encouraged to transact with then at least part of one's holdings would have to be subject to inflation or demurrage (and that is a hard thing to sell).
Whether that happens or not (regardless of the time frame) has no bearing on the next price peak.
One erstwhile poster predicted that bitcoin would fall to $150 and never reach its "unprecedented" peak of $500 again. Needless to say, that poster (like countless other soothsayers) has never been heard from again.