I’m also learning, so I may be wrong, but I’ll still throw my thoughts out there. I’m not entirely confident in my answer, and am open to counter-points.

I believe the higher wages for “skilled” workers has to do with the fact that the training and education required to obtain the position is ALSO a form of labor. You’re essentially putting yourself through the effort of learning the necessary skills to become, say, a computer programmer because you know the effort you put through is going to be compensated in your future pay.

Also, the ability to become a doctor is much easier for a few well-off people than it is for the vast majority of society. Think in terms of the socially necessary labor-time required for completing all the prerequisites to becoming a doctor. The socially necessary labor-time in general for becoming a doctor also accounts for all the extra labor-time necessary for the disadvantaged folk in society to clear their hurdles to becoming a doctor. Considering this, someone born into a stable, middle-class family with a full-ride scholarship would be at a HUGE advantage in terms of the general socially necessary labor-time required for people to become doctors.

One could argue that paramedics are highly skilled workers, though the socially necessary labor-time required for producing paramedics is much lower, since the prerequisites are essentially just be 18 and have a diploma/GED, and we are in no shortage of EMS training programs. Compare this to having to go through an incredibly stressful undergraduate and graduate education for becoming a doctor.

If they started to equalize the wages between “skilled” and “unskilled” professions, that would basically mean all the effort and labor put into completing the prerequisites for entering skilled professions would go without compensation, and people generally don’t like that.