Yep exactly or "this" as they say. The Market doesn't have to respond so slowly that prices stay the same even though demand went up. It doesn't have to charge a faithful customer more than an unfaithful one either.
It would be funny, although not culturally normal, to see companies start to review customers.
I'd have no shame about asking for some free haircuts as well. Your review is probably responsible for increasing their business 1.3-1.5x