Your uninformed opinion on proven medical fact is irrelevant, especially when you don’t even know that paid plasma isn’t directly transfused into patients, unlike actual donated plasma, and you think there’s supply and demand in action for fucking blood transfusions.
Paid plasma is used for the manufacture of various products, anything from makeup to clotting factors. Which, as it happens, are notable for being an increased infection risk over directly transfused blood because their sources can’t be trusted to tell the truth about their risk factors.