Back in the dark ages of the 1960s we were taught there were two main schools of thought on pricing:cost plus a reasonable profit OR all the market will bear. There are arguments for each .
I happen to believe cost plus a reasonable profit is best for everyone.
I don’t know how you define a “reasonable profit.” If this guy paid $55 million for the drug in question and there are only 10,000 people out there using it, then he has to sell $5,500 worth of drugs to each person just to cover the cost of acquiring the product — and that’s before he manufactures a single pill or a single bottle for the pills.