The virtual millions to be made by selling the report pales in comparison to the very many actual millions it will cost to mitigate the effects of fatigue by reducing crew duty times and hiring additional flight crew members to compensate for the productivity shortfall. Reputation and safety are both number one on the to-do list until money enters the equation. Once it does, the back peddling begins.
The original Jet Blue experiment was obviously an attempt to show how flying more didn't result in fatigue by playing with loaded dice and using distorted logic to reach a conclusion, one which I'll bet didn't include a realistic cap on duty time.