This professor is a huge part of the problem. He's a tenured professor saying "caring about cheating is counter productive", which to me says "I would rather have an easy life where I don't have to work hard than to protect the reputation of the institution I work for and ensure that students that graduate have learned something along the way".
He complains he had to work almost 44 hours (2 hours * 22 cheaters) and repeatedly moans and bitches about how much time that is, despite being spread over the course of an entire semester. I assume he's been in academia his whole career, because I can't remember a week where I've worked less than 50 hours.
My only solace is to know that this guy is a professor at a business school giving incredibly simplistic homework in excel, and his students are too stupid to do it. I can't think of a better punishment for someone who puts his leisure and student assessments above academic integrity than to have students like that.
Finally, what is the value of his class at all? If he can't tell his students are cheating without globally searching everything with this software, what are they supposedly learning? I would favor just eliminating this class; if you can't tell whether a student took it or not, they didn't learn anything. If you can't quantify the learning experience, it shouldn't carry credit.
This may be my strong bias as a Math major, but I know there is no way I could have cheated in almost any of my classes. If I had copied someone's homework, either the professor would have recognized it right away (since most professors actually knew and cared about the students in their class), or I would have failed all the exams. Do business school students not have exams that they can fail? If not, what are they supposedly learning? I know lots of business schools really drive their students hard to learn skills that they will use later. My opinion of NYU's business school (where the author of this is a tenured professor) is now so low that I will do a bit more diligence on MBA students with a degree from there as I review resumes and gauge job candidates in the future.
Edit: removed something criticized as a personal insult. This comment was modded up to 10, and at the time of this is now modded as 4. There should be some kind of meta-karma for controversial posts, since they inject lively debate instead of just attempting to game the system! That is my biased view anyway.