It is not a FACT, since the drug is only in Phase II, and 90% plus of all drugs in development fail at some point. Dont use your words so loosely! Also, the bottomline is that if you are a "SALES" rep, with only ONE product in your bag, you are always in jeopardy, that means everyone! So yes, you should always be on your toes, and realize that there is no such thing as making a career out of a single drug.
Even IF, this new drug launches, their reps will also not have lifetime security, as there will always be better, safer, cheaper, more convenient drugs coming right behing it. Remember, two years ago Vertex was the hot shot in the room, along with Merck, to some extent. So yes, three years is an eternity, in this business!
No one can be "Shocked" when they have at least three years of notice. During that three years, there will be many many launches, across many therapeutic areas, including within HepC.
Even if you think you will ultimately become unemployed, you have AT LEAST three years to save a huge part of that bloated rep salary, that bloated bonus, and the car expenses that you dont have to pay. On top of that you will get a nice severance package. So again, with 3 years MINIMUM (assuming it EVER launches, several Hepc drugs have failed recently), if you dont save at least 100k + severance, you have real issues.