The universe is subject to natural law.
Capitalism is based on the idea of infinite growth. This is obviously unsustainable. (Granted, what with the heat death of the universe looming, anything is essentially unsustainable, but whatever).
The on topic point is this. Role Playing Game publishing is a piss poor method of making money. Once your consumers have your rulebooks they never need buy anything again. They can play your game forever.
IT IS A GOOD THING THAT THERE ARE MANY REASONS FOR DOING SOMETHING BESIDES MAKING MONEY.
"A business that makes nothing but money is a poor business."