Right. So continue your reasoning: you are arguing that if we pay the minimum required to produce an item, from that point onwards, more money doesn't unlock ad

Right. So continue your reasoning: you are arguing that if we pay the minimum required to produce an item, from that point onwards, more money doesn't unlock additional production? I agree you need to be able to charge enough to cover costs; the question is what happens after that. Why does it require proof to suggest that paying someone slightly more than the absolute minimum they'd ask to do something will increase their willingness and ability to do it? At 20/dose, companies could produce N. At 30/dose they could probably find a way to produce more (perhaps by spending money to retrofit an old machine, which at 20/dose wouldn't have been worth it). And at 100/dose they can afford to fly the device manufacturer out to personally oversee sped-up installation.