I work in a library and we have dealt with a number of issues related to semi professionals for years. About 25 years ago there was a push to have para professionals take over many of the duties assigned to professional librarians. These included cataloging, reference services, program planning and in some cases even management. It is now common for a librarian to employ as many paraprofessionals as professionals (those who have earned a masters of library science)
The effects have been both positive and negative. On the one hand the use of less educated staff allows libraries to pay them less and dedicate this budget item to other things. But on the negative there are now far fewer jobs for professional librarians as many of their duties have been "deprofessionalized". A lot of people get their MLS and then find themselves working for pennies and getting little recognition.
The situation is pretty controversial in the library world. A lot of people defend the use of para professionals and just as many others call for an end to the practice. The trend shows no sign of letting up. Who knows what will happen in the future.