It's not as much in your industry as the education count is likely to be very high due to the skill set being very specific. As a consequence, you've got less people wanting to go (and needing to) do that type of work.
In my industry, demand is so great, problems are so complex, and some agencies are so poorly run, they'd have us work 140 hour work weeks if possible. We really have to scrap for resources. Give you an example:
I work at a private hospital, which currently ranks in the top 20 in the US. The program I'm in does community based work, the most inglorious type of work (in comparison to inpatient social work and traditionally clinic based outpatient social work, which have their own shortages for resources and challenges). I've walked into clutter filled apartments, nursing homes without hot water, project buildings with urine smell so strong it burns your eyes, and mold in apartments so bad you may get sick just by looking at it. These are folks on Medicaid, the stripped down version (in my opinion) of Medicare. Many look like me, some look like Trump; all have limited economic resources. I should be better equipped to service these people to reduce hospital readmissions (decreasing costs), but their managed Medicaid limits access to some medical and mental health providers (even within the very hospital I work for), makes getting medical equipment more tedious, makes finding transportation to medical appointments (livery cab access is OK, but ambulances and ambulettes, that's a fist fight for approval if needed) more of a circus. So while my colleagues and I have to hustle to help who we can navigate where we can as creatively as possible as people face chronic medical and mental health challenges, all done from the comforts of a...cubicle in a closed room.
Let that sink in for a second.
And I'm at a top 20 nationally recognized medical institution with a long standing history of social services in the social work department. Yet, in my program and my day to day, there are certain resources I'm asked to do without to be effective. Not bad mouthing the place, just telling you how it is. You can imagine what it's like in other places, and other industries that aren't pulling in the cash at certain concentrated levels.
The powers that be still cherry pick the glamor filled parts of certain jobs in certain industries as carrots to keep people working. Americans are some of the hardest workers on earth simply because in many cases, there is no other pragmatic alternative but to be good in the rate race (or else you will starve).
You should really look up the lyrics to this, especially the work comments.
https://youtu.be/6CLE9XDyJCA