I think the developer is just smart, he knows he has a golden goose. E.g. a co-worker and I started playing the game after a sale just a few months ago. It is one of my top all time games now, and I tell people about it = potential revenue that some games can’t hope to ever achieve years into their release. I do hope he takes time off more often now for anything else since it seems like he has burnt out a few times during development, hopefully he enjoys the fruits of the labor.