Doing something you believe in is really fantastic but it's higher on the hierarchy of needs than "put food on my table" and "keep my spouse from resenting me for never being around". If you're working 80 hours a week, then you should be compensated for that. Financially.
A few months ago, a USAF Colonel came and gave an address to the employees at my job site. "I know you all do this for patriotism and love of your country," he said. Sure, those are reasons...#9 or #10 on my list, maybe, for dealing with the insanity of flight test. #1, as the great Randy Moss would have said, is "Straight cash, homie."
I wonder how highly Mr. Sandhu's employees would rate the mission to "truly reinvent banking" on their list of reasons for coming to work?