Yes, supply and demand matters a lot. In my country becoming a doctor is particularly lucrative even by Western world's standards, because a combination of our

Yes, supply and demand matters a lot. In my country becoming a doctor is particularly lucrative even by Western world's standards, because a combination of our broken healthcare system (and doctor's association's successful lobbying to keep numbers of doctors being educated too low) creates an artificial shortage of doctors. Many of them choose to work 3-4 days a week in private sector and still live very, very well. The public sector is forced to buy services from private with very inflated prices, again allowing those companies offer excellent salaries. At the same time professions like engineering are actually underpaid here, not to even mention nursing.