Not trying to be intentionally provocative here, and I can certainly sympathize with this frustration (I also agree that it's not a good idea to go into a PhD with the express intent of mastering out). But are you sure that none of those you witnessed involuntarily mastered out? As someone who involuntarily mastered out of a former PhD program, I can say that I didn't intend to waste department money, take money from more deserving students, and certainly didn't willingly deceive anyone. If on the other hand, everyone you have in mind voluntarily did this with little regard for how it could affect others, then I get it. Just wanted to offer the reminder that if you see someone in a PhD program master out, it may not have always been their decision.