That paper makes a good case against its own conclusion, and little case for it. Some choice quotes: "there are endless examples of this type of “evergreening"

That paper makes a good case against its own conclusion, and little case for it. Some choice quotes: "there are endless examples of this type of “evergreening" "With a surprisingly large number of expensive “evergreened” drugs, one need look no further than the person in the mirror (and his or her doctor) if one wishes to avoid paying a much higher price for essentially the same medicine." "Pharmaceutical companies, it seems, have been very successful in convincing consumers and doctors that the newer version is worth the extra cost." The author is suggesting that there's no problem because consumers can in theory avoid the problem, but as he points out, they don't. Evergreening is a very prevalent and effective strategy to separate patients from their money.