Yeah there is no such thing as selling a commodity below its market price on the open market. Someone else will come and arbitrage that away, or it’s not an open market.
Well, that's blatantly false...
A well-known anticompetitive tactic is for a big player with a vast bank account to move into an area and eat losses while waiting for their competitors to starve. Well observed in the 90's movie rental market, so certainly real.
Supply is severely limited and there is not really any competition making RAM chips, so it is kind of not a commodity and not a market.
But you are right someone will arbitrage the price, like scalpers selling concert tickets.