Who are you referring to in your 80% example? Also, what do you mean by purged? Do you mean stopping manufacturing of an approved product?
No company is gonna cut a an approved drug with hundreds of million in net profit because the % profit is <80. I could see them cutting drugs if the total profit is low tho. This helps them focus on other more profitable drugs with. That is to say, most companies don't want to be making 100 products that net low millions each. They want a few products that make 100 million+ each.
Sounds like I see it as more believable than you, but with the caveats that I added in my parent company. I doubt <80% was the only reason and any of the products were massive revenue makers.
From a collegue I know that they purged drugs from their portfolio because it made less than <80% net profit.
But you are right. It is very different.