[vopoylovslov]

His argument is probabilistic. Ok fine you don't agree because he's wrong for 5% of the cases. Congrats

[Dylan16807]

That's a very weak dismissal. I wasn't aware of any common knowledge that markets go pro-consumer direction 95% of the time they make significant moves. Did I miss something? Do you have more to back that up?

Competition is very imperfect in a huge amount of markets, especially ones undergoing major changes.

[burkaman]

I think it's wrong in the majority of cases, which makes it a bad principle.