[shadowflit]

Sure, but I'm saying I want money. And given that I want money, a teaching position is a worse proposition for me than an engineering position (whether due to the annoyance of finding a high-paying summer job every year, running a second job in the extra time I have, or simply because the salary is less regardless). If this holds for other people as well, the only people a teacher's salary would attract are people who want time. Which means the salary is not high enough to attract smart people out of industry whose goal is also to make money.