Your instincts are correct....this industry is finished. The day of 30 year careers in big Pharma was don 10 years ago. You'll probably have a tough time finding a job with the same pay for so little work, but you will certainly find more job security....these days, meaning 5-10 yrs
I found when I left that recruiters, employers, etc. do not highly value pharma experience as they know what we have reduced ourselves into.....caterers and delivery people.
Take the job if it's the only one you can get at this time, and keep looking on Pfizer's dime.
Money's great, almost free car, great benes, lots of eye candy of both sexes.
It's very easy to fool and bullshit the idiot managers; just do your paperwork on time, get your signatures, order samples, and keep the mileage up on your car. You'll only need to give them a show once a month or so, and with the access today, seeing no one, except for a signature is pretty much standard. After my first year(of 11), I had it down to a science..8-5 two days a week, 10-2, two days, and very rarely worked on Fridays. Won four trips, and many other awards; none of my managers were any the wiser....hell they all play golf on Fridays, and have half day "conference calls", or "meetings" on most days. They think they're shitting us!
Good luck to you.