Never. Both the Governments and the banks are not supporting cryptocurrency because they know that if the people will start using cryptocurrency,then they would loose their control over the people. Government and banks are not able to control cryptocurrency and the related activities so they will never support it.
Well, actually, both the governments and the banks should get interested in bitcoin deposits with the banks for one simple reason: as soon as banks start accepting bitcoin deposits, they got us by the balls.
Lemme explain my point.
Have you ever opened a bank account? Before you can deposit money, a bank must identify you. That means the moment you make a bitcoin deposit you lose your anonymity, which is just what government needs. So, I believe both the governments and the banks might be really interested in that because it's really beneficial for them.