That doesn't seem too strange when you consider that those two types of companies have different operating models. A drug company is in the business of taking relatively cheap goods and converting them to very expensive goods, in other words adding a lot of value. A insurance company/PBM is mostly in the business of skimming a percentage off transactions.
It is not strange, but it also contradicts claims about managed care organizations earning tons of money. It is not a business you go into to get super rich.
