Markets often dont model the real world well
fun adventure as a young man, for a year. but you couldn't get me back out there for $1 million AUD per annum now.
sure, there is a price that I'd eventually say yes to, but there is no reality where you can offer $5MM for teachers or hairdressers.
Second difference is that schools do not want revolving doors of teachers, each leaving after a year or two. That is completely normal on oil rigs. People work on rigs temporary, until they move on to doing something else. Quite a few positions are filled by people who do their two years or whatever and do not plan of making it a career at all.