They fed us this line during training, and often senior leaders who left our company would say the same thing when interviewed on CNBC. This is naïve at best though. Banks are only recently starting use "Big Data" (how I love this buzzword), because they have unmaintainable mainframe systems running on LPARs. The reason it's "Big Data" is that as time goes on, the retention of financial data will increase as well. Banks are definitely NOT technology companies, at least as far as the compensation structure is concerned ;)
Don't believe me? Compare any bank CTO to an equivalent position in front office.