Bitcoin will  be whatever chain has the most hash power.  It may indeed be BCC/BCH, especially if something fucks up and the 2x part of Segwit2x doesn't happen.  We already know some Core developers are against it at all costs, so it's not a done deal.

IMO, we need ALL scaling options, including side chains and SW.  However, the most important of all is the larger blocks.  Long term, "Bitcoin" (the concept, and the recognized currency) will have larger blocks; so if the Core side never adopts it, or pushes it off too long, BCC/BCH will take over.

The short term price means nothing for the longer terms.  Expect fluctuations, especially as people shore up their respective positions based on beliefs.  In any case, it's not going away permanently.  I think there will always be people that support it,