no, the value of the blockchain itself is 0, because it can be easily replicated. So the value is in the network effects, or the people using the particular blockchain.
You cannot replicate the hash rate, therefore you cannot replicate the blockchain. All chains will have different security profiles based on hash rate. No chain will be equal to another. "The blockchain can easily be replicated" is another myth of bitcoin.
A weaker but related meat-space fact:
some of us will never support a different ledger. I'm all for alts but if you don't start by forking Bitcoin's blockchain and have an alt superior enough that I would want to support it, then I will just support the first Bitcoin's blockchain fork that implements that alt.