> mass murder for profit
This doesn't make sense. Only an entity out to make a quick one-time score would literally kill their customers or potential customers. If anything, you'd want to bleed your customer for as much as you can, which is closer to what they actually do, e.g. provide 'discount programs' for people with less wealth or income to obtain drugs with high 'sticker prices' for much less.
Remember that, generally, if anyone is paying these high prices, it's insurance companies, not private individuals.