It's incredible how almost everything in this post is wrong. It's a four year degree, you'd have to go back a century for pharmacists to own their own pharmacies, nurses do nursing, not "medical stuff" - and most of this has to do with legal liability for malpractice.

Doctors and pharmacists have professional degrees and are held liable for mistakes. Nurses and pharmacy techs are held to a dramatically lower standard, usually they only get fired unless they're stealing drugs.