But revealed choice isn't a true indication of preference if the options to choose from don't allow for expression of preference. The market isn't some neutral

But revealed choice isn't a true indication of preference if the options to choose from don't allow for expression of preference. The market isn't some neutral A/B test because the seller is incentivized to manipulate A and B. It's more of a market game situation, where buyer choice says as much about seller preference as it does buyer preference at some level.