Of course fraud is frowned upon. You seem to be jumping to the conclusion that these companies are definitely up to no good. Can you provide any evidence of that anecdotal or otherwise that they are defrauding people?
The allegation seems to be they are charging a lot of money for something they can't deliver on (i.e., a promised high placement rate in well-paying jobs).
That would be fraud, and if it's happening, it's entirely OK to do something about it.