Something seems to be broken with the culture at MIT Sloan MFin. They push group assignments in almost all the courses, but don't seem to care if people are simply copying the answers from their group-mates. Faculty don't want to get involved with any discussions about cheating. It is a no win situation for them. Students who don't like their grades can simply keep arguing with the professor to get it changed. The admin people make sure to tell the professors what grade a student needs to avoid failing out - guess what happens then?
Finally, recent disclosures of MIT's connections with Jeffrey Epstein, particularly after his first conviction as a sex offender, point to something really missing from the schools value system.
https://www.newyorker.com/news/news-desk/how-an-elite-university-research-center-concealed-its-relationship-with-jeffrey-epstein
