they are indeed, but again it's all a distraction, they have no choice but to do it, or else their investors will make claim they are lazy and doing fuck all for changes, a big topic these days in banking board rooms
there have been big operations tests with blockchains done since 2014, and guess what, everytime it didn't follow through once they realized the costs was enormous
to make it worthwhile, you need to have a very good reason to implement in terms of operations efficiency, or output efficiency
for now, it's all wank and communication campaigns