KYC is a permissioning system!
This is why KYC/AML must ultimately fail (ie be eradicated) for BTC to serve the unbanked.
KYC / AML is an evil in exactly the same way that freedom of speech isn't !
However KYC cannot prevent p2p transactions (they remain permissionless given decentralisation)
With this in mind - name something / anything more useless than a private blockchain.
I'll wait!