I don't understand this line of thinking. Our employers should pay us more because pharmacy school is expensive? You can rack up plenty of debt obtaining a Masters degree in art, history, social science, etc. Should they be paid more too?
You can do either that or you can maximize your salary and minimize your student loan burden by choosing computer science, engineering, accounting, or the trades.
We "should" be paid more than engineers based on the stress level and liability that we take on. Of course, in a supply/demand world, that won't happen due to the saturation going on right now. This is partly fueled by the inflated $120k salaries that many pre-pharms buy into but fail to take into account student loans and taxes.