Feel free to make whatever changes to my arithmetic you think are warranted, as long as you justify the reasons for the discrepancies.
Note that the NPV of a revenue stream from a generic drug that continues “in perpetuity” is not directly comparable to the NPV of a revenue stream from a branded drug that goes off-patent on a date certain.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”