This is the first of its kind of a bank coin but just wait until other multinational investment bank and financial services companies do the same thing.
These types of institutions are playing with trillions of dollars so if their coin fails in value, they still have much fiat to fall back on.
they shouldn't ever fall in value though. they shouldn't have any speculative value in the first place. the whole system is permissioned and everything is centrally administered and reversible. the whole thing sounds like a gimmick tbh. it's not even an interbank system with federated consensus. it's just a private "blockchain", a glorified database run by chase. why would other banks prefer this to the legacy system?
Global banks could have some advantage of this system, today they use the old and slow legacy system and the transactions are expensive and needs a lot of manual work on the sender and also on the receiver side. In the EU, they use SEPA which is a kind of quicker and automated system (less manual work needed, so quicker and cheaper), a blockchain based automated system would need even less manual work so it would be more quick and even more cheap).
So if there's a bank who wants to transfer internationally between it's subsidiaries, it can be a solution for intra bank transfers.
Edit: Typos
But why would a bank trust the solution and software of another bank, which may even be on a different continent?
What would happen to whoever owns this JPcoin if JP closes or go bankrupt one day?
Unlike this closed and centralised system, it'd make more sense for a financial institution to go for XRP. Unlike what many uninformed people say, XRP is decentralised and if one day Ripple Labs shutdown, no one will lose their money.
They might stop receiving updates on the xRapid software, but someone will take Ripple Lab's place and continue developing the system.
Also if many would try to take Ripple's place, the nodes will decide if the blockchain will respect the decision of the new development team, just like it happens with miners in PoW.
So, why would anyone prefer JPcoin over XRP?