Zuckerberg is doing something different. He amassed a gigantic fortune and built a huge company. Now he's trying to innovate rather than simply sit on his hoard and extract value. He's spending his money on real innovation - actual technology. That's good. Plus, he's doing it in complete defiance of media, investors, business types, etc. That takes courage. Good for Zuckerberg.
What is the point of getting control over such vast capital if not to try and build the future?