Tons of kids aren’t taught that, some of them start businesses, and they may struggle to make ends meet (or at least to thrive like they could be) because raising prices to market rates feels so unfair to them that they won’t do it unless prodded to and told it’s ok by someone else (and they still might not)
I definitely am not convinced market-rate-is-ethical-and-fair is natural thinking for most people, or the kind of thing they want to do.
(I’ve been the one telling people they should raise prices and I still can’t shake the feeling that it’s kinda wrong…)