Seems like this extremely detailed Reddit AMA by Arcen Games is relevant to this thread:
Things of interest to this thread: insights into the Steam indie game market changes over the years. Lots of specific revenue numbers on games. Talk about this a development model involving volunteers that’s very reminiscent of the Chucklefish drama, except Park appears to have been a lot more thoughtful about it.
(Thanks to @lordkosc for posting this in the AI War 2 thread).