That the OSS writer cares and is often willing to fix code she writes for free, more than the other paid work she does.

Ok, I do see that. Somehow the title does not work for me, but that is o.k. I guess.

To get back to your point, I like to call it 'play' ( vs work ).

Yep, the title is not a perfect match with the text indeed. I documented our interaction in the post.

In economics it’s known as the subscription equilibrium.