Dynamic pricing is mostly a seasonal and timing game. And the actual money is made in higher classes of service.
This idea that Bob and Alice are shown drastically different pricing for the same seat because of insights into their specific purchasing behavior is just ludicrous.
Most people buy tickets from aggregators who have been already gutted the ability to do this anyway.
You basically argued literally the entire thesis for customer segmentation and behavior based pricing and then called it ludicrous. I hope PhDs and statisticians who make living building these very models don't see this comment and begin to question their entire existence.
You've just read past what I said because you want to disagree.