Yes I wonder that too. When I was in university the computer system scanned our dissertations for signs of plagiarism etc. This should be a common system in use wherever writing is involved. Trouble is at the end of the day it is not cheap.
Written by Jonathan Townend, RMN - Editor - Friend of Medium
Psychiatric Nurse Writer. Owner of Creative Passions, The Shortform, No Shame, World of Fiction publications, and co-editor for The Chocolate River.