Don't be so sure that they aren't.
For every prospective med student who is worried about there not being enough spots for him or her to be accepted, there are probably 10 doctors worried about the shortage (or "maldistribution") being addressed and the market either coming into balance or being flooded as a result.
Does anyone seriously believe that the AMA or AAMC is more interested in flooding the market to meet demand, or protecting the livelihoods of those already licensed and practicing????? Law schools sure did a great job expanding capacity and addressing the great American lawyer shortage!!!
As much as we are all in it to serve humanity, with money just being a nice side benefit (as evidenced by the best and the brightest seeking to fill the greatest need rather than gravitating to the highest paying specialties

), just what would happen to
@Goro's "sellers' market" if it suddenly came into balance and salaries were significantly reduced as a result??? My feeling is that medicine would look a lot like business and law, with the tippy top schools being just fine, and the rest suddenly and miraculously figuring out how to treat candidates like human beings as they struggle to fill seats.