i have worked for several investment banks, and have always been highly paid, and had top-notch hardware and software to work with - i am sure that most competent banks realise that they are basically software hosts.
Investment banks aren't your typical consumer banks though - less red tape (because they're not consumer banks), less historical baggage (consumer banks have accounts that are sometimes well over a century old, which makes everything that touches account data incredibly sensitive as the data needs to be always consistent), and way more money available. There's a reason why a lot of advances in communication came from the needs of the investment banks, particularly specialized hedge funds / "quant banks".