NRU
I used to think that as well and maybe "institutionalised" is the wrong term to use, possibly "loss of sense of purpose" may be more correct.
Neighbour who did 30 plus years in a large airline has been retired 2-3 years, he uses my recycling bin as well as his own, lots of crushed beer / cider cans and they not mine.
If it was the odd one (not the alcohol context) I would think yup maybe but seeing so many people not cope with not having to get up and go to work everyday and life just fading away.