What's fair about Zuckerberg becoming billionaire by basically pure luck? There are millions of people more hard working and more intelligent than him but they were unlucky. If not Zuckerberg then someone else would create Facebook, he was surprised by how successful FB was. Calculus was discovered independently in the late 17th century by two mathematicians and it would be discovered if they both would die before doing it. It's all statistics, you can have the best idea in the world but be in a wrong place at the wrong time and you will fail.