My simple yet unproven theory (well I don't know if it's been proven or not, just haven't bothered to done the research)
In these economic times, it's a dog eat dog world out there. People (especially execs/some owners/bosses) in an attempt to ensure their financial wellbeing are willing to raise the prices for everything so that they can make that extra dollar and don't have to share it with their coworkers (thus why salary rates don't increase). I had a discussion with my friend purely on a theorical scale and we noticed that in these times the rich are getting richer (CEOs and such) while the managers on the lower end of the corporations are getting paid the same rate/less. That's why in today's media the positions of being a CEO or some high-end executive are so glamorised because they're the type of jobs that can get you big $$$ which to most people = success.