I’m a college teacher, still working at 72. I’m trying to figure out what “less productive” means. I grade just as many essays as I always have, I spend more time than ever individually mentoring students (because I really enjoy that part of it), my teaching evals are just as good as before. When I retire, they’ll replace me with adjuncts and grad students who are paid poverty wages. I’m sure many companies would love to have cheaper labor, and unfortunately for most non-unionized workers, that’s what they’ll get.