Isn't keeping good teachers an important thing?

http://www.cnn.com/2011/US/07/20/why.quit.teacher/index.html?hpt=hp_c1

CNN: Why did you decide to leave teaching?
DeRegnaucourt: I have had to learn how to budget. In those thoughts, I came to the realization that the money I make isn't enough. It isn't enough to live alone. That realization was daunting. As educators, we make what we make, nothing more, nothing less. In industry, if I'm valuable, my company can keep me by making the package they offer me more attractive. In education, the principal's hands are tied. You just never know what the future holds. I still need to plan for the future.

Meanwhile, in Finland, teaching is one of the most respected jobs in the country:
http://letters.salon.com/news/david_sirota/2011/07/18/tony_wagner_finland/view/