I feel like the majority of other commentators before me fail to grasp that this coin will be ony for internal transfers. It won't promote the usage of cryptocoins, it won't help us in any means. It just uses the blockchain technology, so those big fiat whales could exchange even faster to make even more money. JPMcoin could have a negative effect on XRP, though but we can't know for sure right now.
JPM token is just the beginning.
Other banks will follow and also corporations Apple, Facebook..... or the Japanese IT giant,
https://www.blockchain24.co/stablecoin-in-japan/Several countries (Russia, Saudia Arabia, Venezuela, UAE...) also said they will create the own mathematical (crypto) currency.
If you only can pay with Amazon tokens at Amazon so be it.
One thing is certain, NO COUNTY OR CORPORATION WILL HAVE A MINEABLE COIN all they will ever have is no-cost coins.