Surely said instructors would of agreed to the terms and conditions before signing on. Who is to blame there. People should take responsibilities for there own actions. If they were told one thing and got another well I can understand their frustration Maybe they thought well if I fly 30 hrs a week and earn 30 an hour that's 900pw. Sadly instructors start to moan and rightfully so that there ain't no 30 hours a week walking through the door. This I see is were the problem may lie.
As far as rorting cpl students I'd like to hear of those stories. Having did my ppl, nvfr, multi and cpl there I never thought once that I was being their cash cow. Most of the time the instructors felt I was ready for the various flight tests even though I felt "can we do another flight before the test". So I don't think they want to keep you flying more than what is needed to get to an acceptable level.