My main issue with this article is that the author assumes that all developers operate equally. He averages the individuals who build apps in their spare time a

My main issue with this article is that the author assumes that all developers operate equally. He averages the individuals who build apps in their spare time and might make thousands of dollars as 'extra' income, with the large app companies who spend tremendous resources on building apps that get high returns. When he crunches his numbers, he gets results that are probably very far from the actual reality of things.