This is not the same, the airline can set whatever price they want, AI or not, but I see the prices and then can decide whether I want to buy or not.

Maybe more relevant would be oversize/overweight baggage fees. Where there is some fine print about baggage policy and you may find yourself paying expensive fees at the gate because you didn't realize the weight limit included your handbag or that the allowed dimensions are nonstandard.

A hotel charging $500 for smoking that didn't happen is worse than all of that, it is just fraud. Personal ticket prices is just business, controversial, but they are not trying to trick you. The fine print is bad, but at least, you can avoid the fees by being careful. Here, you have no choice but to pay and maybe hope to get your money back by filing a complain.

Delta has never had set prices and this is fake outrage. Airlines have used algorithms since deregulation in the 70s to set prices. The “algorithm” use to be simpler based on “fair classes”. A fair class is not a simple - Main, C+ and FC. Two people sitting in main can have different fair classes.

https://www.alternativeairlines.com/fare-basis-codes-explain...

Of course as computers have gotten more sophisticated, the machine learning/revenue optimization rules have too.

For instance it costs less for me to fly Delta from MCO (Orlando) -> ATL -> SJO (San Jose Costa Rica) than it does our friends to fly from ATL -> SJO when we are both flying the same second leg.

There are other tricks to like booking a Delta flight via AirFrance or Virgin Airlines domestically cheaper.