You wanna make games? No one's stopping you from creating the most whackier experimental game this world has ever seen.
You wanna make money off that? You gotta wade through all kinds of shit, as is usual in most businesses. And before someone mentions Minecraft - it is such an outlier that it's not usable as argument in any discussion.
I don't subscribe to the self-entitled tone of the article that making games in itself is something virtuous and should be basically subsidized. I love Koster though, Theory of Fun for Game Design is what made me really interested in game development.