I meant desirable jobs in medicine. Let's consider the casus of general surgery as example.
When I was a first year medical student, general surgery was still a little competitive. Then there were rumors about falling reimbursements, about malpractice crisis. Then one year match data came in--some general surgery spots went unfilled. Then next year, even more spots... Then I've learned about the $1000 cabbage reimbursements, about $200 appendectomies... About malpractice rates of hundreds of thousands... Go to surgery forum, they will give you more details.
This is how specialties fall from prestige. Now, these things move in cycle--some specialties rise, some fall. However, it seems that overall there is a downward trend.