Heck, if it weren't for banks we'd probably live in some kind of Jane Austen world where the vast majority of the land is owned by a few super-rich families and the folks who don't inherit money have no way of getting ahead.
Maybe you were being ironic and I just took you too literally!
It's the difference between someone who INVENTS a medication, and someone who collects 5% fee any time you PURCHASE the medicine. Sure, the pharmacists might go on and on about how they are helping people, but really it's the chemists that are doing the hard work that ultimately are the ones improving your life.
There are genuinely useless, parasitic, and net-negative people out there, but none of the proposed examples (bankers, pharmacists, Google) falls into this category.