Indeed the banks are not interested in Bitcoin, because a decentralized currency like Bitcoin will bereave them of their current power as agents in the fiat fractional / no reserve scam. Instead they try to establish private, i.e. centralized blockchains to mislead the public of what the Bitcoin blockchain is really about. Maybe the bankers - out of self-delusion - even believe in a meaningful usage scenario of centralized blockchains. However in reality there exists none.
The entire reason for Bitcoin using a resource intensive public blockchain is to make
decentralization possible. If you want to have a centralized fund-transfer and logging system you can realize that with a traditional data bank much more efficiently.
Centralized blockchains are will turn out to be a pure money burning mechanism for the banks, leading to no avail.
ya.ya.yo!