The ‘trust thermocline’ occurs when an organization repeatedly takes their customers for granted, and they reach a critical point of ‘no trust return’ and just leave. Essentially, if you gradually provide less quality while charging more money, you erode trust- and if you lose trust, you don’t actually ever get it back. See: Twitter. And possibly now Reddit. Great term, I love it even, but I hate that the lesson these people are learning isn’t ‘hey maybe we should stop pissing people off without good reason’ and is instead is “this is acceptable risk and we should continue playing chicken with dissatisfied users to make our shareholders happy.”