[crazytony]

>>it also just doesn't make sense from a business point of view - save a few thousand on a flight, but the extra fatigue makes good decision-making harder.

I can vouch for this. It makes good decision making almost impossible. I've made a ton of trans-Pacific trips and jetlag has a much bigger effect on you when you've not been able to sleep or slept poorly on the plane. Business class really does help to reduce the jetlag.