That’s a very, very important point. The only way to tell if there is profit or not is to know both the revenue figures and the costs of the project. We, as external observers, haven’t any of this information. 
We have discussed sales, Kickstarter, game profitability and SteamSpy figures in more than one thread. Personally, I think that this post by Ron and the interesting article about Steam sales that he has linked to is quite revealing of how this niche industry is struggling to get good results, but you’ll find other similar statements in other threads as well.