There's nothing wrong with trying to maximize your earning in doing what you do. If you want to have the greatest good on the world, you do what Zuckerberg doe

There's nothing wrong with trying to maximize your earning in doing what you do. If you want to have the greatest good on the world, you do what Zuckerberg does: make a shit ton of money and then give it all away to the best charities or greatest need (or at least plan to). It's not a case of greed winning over good will. The number of entrepreneurs and businesses doing good in the world isn't limited by the will to do so - I'm sure you can find countless wannabee business and entrepreuneurs trying to make a positive impact. The limiting factors are barriers to entry: legal, political and marketing. The greatest problems of our times aren't technical: they're political and legal.