I don't think that banks are after crypto, so them joining the Bitcoin movement is unlikely to happen. It's the decentralized nature of the blockchain technology that interests them. The blockchain has the potential to be an extremely robust and versatile platform for various online systems.
But that is just it..there was an open internet and AOL tried (and succeeded for a time) in telling folks it was 'too complicated' and pay AOL to use their service as a front end
on this pesky open internet..it did not work but still
I expect the same to be tried by banks and others with crypto.....once they get blockchain idea down (internally as you state) they will take the next step...likely as a POS coin
and such...if for no other reason then to at least get a piece of the crypto pie even if it does stay open source
example already is RIPPLE and some others ..just saying..this will happen ..perhaps only on a 'knee jerk' reaction to bitcoins surge of use..but it will happen
as a further example of such backlash starting the Australian govt is 'investigating' the shut down by a bunch of banks (conspired) on bitcoin transactions and locked them out of their services....I would expect more of this ..with the cavaent that the banks say you can use their blockchain/crypto because it is 'safe' vs evil open crypto like BTC
its coming i probably won't work (banks doing this) but there WILL BE such an attempted backlash...pretty soon imho as banks and other traditional finance services get scared
here is the Australian bank link story as one example...a backlash doomed to fail perhaps ..but this is gonna get common imho over the next year
http://cobit.co/an-investigation-in-banks-that-closing-btc-companies-accounts-in-australia/But again imho the banks or conglomerations of such WILL make (or push like RIPPLE) an alternative (probably POS coin) imho ...along with the above..the more INNOVATIVE finance places say (like barkleys?) may not ..or even AMEX but there will be much screaming of unfairness etc for those banks and finance houses that drag their feet.
and they will do what all do under such circumstances of seeing their empire fall....strike back with FUD, campaign contributions to politicans, PR campaigns etc etc
we will see but my take on this ..on how BIG it may be this push back I've no idea...but I still kinda suspect it will be substantial in that the true scope of open crypto btc/ltc etc is starting to sink in with these folks (ie it starts with blockchain and ends with wtf the bitcoin backbone mining network is how huge? damn it)
hard to be a banker waking up to BTC as a threat 'for real' say in the next few months don't ya know