I've never heard of "models of market fairness", it sounds silly. I called the extreme where fairness was irrelevant an ideal. I take it you agree with that point. Though I don't see that much of what you are saying is particularly crushing to the ideal. In "the real world" one also doesn't need to switch jobs every day like a day trader changing stocks.

I also take it you concede that pursuing fairness leads to reduced efficiency? You can't very well serve two optimals.