To be fair, I don't really think you can call it milking when the most he has even charged for any of the games has been $7.99 on Steam. He's not charging you full price like a regular game.
Plus, even if he is making a lot of the games I don't really see how you can blame him. FNAF is reaching Slender-levels of popularity and everyone is playing and talking about it, there are already plenty of spin-off copy-ish games out there using the same FNAF formula. There are even talks of there being a FNAF movie out there (or apparently according to rumours).
The only thing I wonder about this is what questions are there left to answer, considering that I thought the 3rd game was supposed to be the last as well. Will be interesting to see what story there is though and all the theories people will make about it though.







