>Pointing out research, or writing, or anything else, ignores the reality that if the production cost warrants a sale price of $x, charging $x * 5 or in some cases $x * 100 and using legal protections to do so is inherently greedy and immoral.

Why is, for example, a student discount, "inherently greedy and immoral"? I don't see why there's intrinsically any moral element to charging groups differently based on their willingness or ability to pay.