As for money, well departments do have the budgets to hire developers. Science funding is in the high billions in most western countries. The problem is not departmental budgets, it's a social problem. Universities love the practice of spreading money amongst as many professors and tiny departments as possible in order to lay claim to every possible area of human knowledge/experience. Combine that with a culture of low standards and coverups and you've got a recipe for disasters (e.g. invariably critical bug fixes that corrupt data are described as not affecting the final results even when that clearly can't be true).
