Nursing is hard work, and if someone is already "comfortable", there's not a lot of incentive to study for it and do it unless the pay goes WAY up. There are a

Nursing is hard work, and if someone is already "comfortable", there's not a lot of incentive to study for it and do it unless the pay goes WAY up. There are a lot of jobs like this, where the threat of discomfort is the primary motivator. Across the economy it would take a huge amount of money to incentivize already-comfortable people to do them. And if the jobs don't get done, then someone else is uncomfortable.