Think about what you're saying: "It's a red herring! We know that schools spend money they get on dumb things!" Yes, that's my point. :) If we could magically fix that, it might--in principle--become a good idea to give them more money. Giving them money does not actually magically fix that.
It's worth noting that Maciej forgot that the tech barons he hates actually tried this: https://www.washingtonpost.com/opinions/how-newark-schools-p...