Infact, i'm pretty sure that since the January low, we have already had a new player in Bitcoin, most probably a bank and what used to be 'the people's currency' will once again become more and more centralised.
The blockchain is only as strong as the network hash used to confirm its blocks added to that point (e.g., cumulative difficulty). I doubt any alternative blockchain will become more secure, ergo more valuable, than Bitcoin.
The banks may want to cut off and destroy Bitcoin but the genius of its design increases the difficulty of doing so the more of a threat it becomes. Banks may be coming around to this new reality.