No, free markets theories take into account information asymmetries and principal-agent problem. I don't believe https://en.wikipedia.org/wiki/Law_of_one_price

No, free markets theories take into account information asymmetries and principal-agent problem. I don't believe https://en.wikipedia.org/wiki/Law_of_one_price https://en.wikipedia.org/wiki/Law_of_one_price to be true in the general case How does anyone look at this and think it's in the best interest of consumers? As the article said, discounts for people very sensitive to the price. Some people might not care about spending 2 % more and want to book their flight right now, and some others are ok to spend time to look for price 2% cheaper (+ taking the time to know about the existence of dynamic pricing and techniques to avoid it)