You need large grants and already renowned professors. I'm guessing that's what is really expensive. The problem we have today is that the gap between academia

You need large grants and already renowned professors. I'm guessing that's what is really expensive. The problem we have today is that the gap between academia research jobs and the industry is possibly the widest ever, at least in some professions. Deep learning is just one example, but the generic Data Science trend in the industry has been syphoning people away from research on a larger scale.