When we were working as professors, most of us had experiences in which our attempts to "prosecute" students for plagiarism - regardless of evidence or the hours we spent preparing the paperwork and evidence - resulted in things like: being told we were wasting everyone's time, being screamed at by chairs and course supervisors who felt we should be less "rigid" or that any plagiarism at all was a reflection of our poor teaching, being asked if we needed therapy because "maybe you just need to accept that your students are learning from you," abhorrent behavior and / or statements from the accused student(s) that led to more institutional shrugging, non-renewed teaching contracts or other penalties if our "prosecution" of the students resulted in poor evaluations or a number of F's in the course above a certain threshold, and ultimately, few or no consequences for the students.

So, in a sense, working as a professor could also be described as "earning money helping people cheat." The difference, of course, being that adjuncts don't really earn any money.