What I am saying is that people make a cerebral contract with their job based on a simple cost/reward basis.
If that is really happening, I find it extremely worrying. Let's look at a few other occupations...
If you are in a road traffic accident in the middle of the night, you will be taken to Accident and Emergency at the hospital. The only doctor there will be a junior one, working very long hours on very poor pay, putting up with it in the hope of something better in the future. Does he/she say: Jeez, it's 3am, and this guy's in a mess, but wait a minute, I'm not making much for treating him and I'm bloody tired, so I won't try too hard".
If you make it to the ward, does the overworked, underpaid nurse say: "Aww, leave this one alone; he's a nuisance, and we're not earning enough to bother".
Does your newly qualified and poorly paid teacher say: "Forget teaching these kids properly; I wanna be a head teacher and do something interesting, and more expecially, earn more. I won't bother until I do".
Now, you may say all these people earn a bit more than flying instructors - and they possibly do. But they still all earn below average wages, work hard in often dangerous conditions (teachers, doctors, and nurses get attacked not infrequently), and often have very anti-social hours. But they do their best because they want the job, in the hope of something better, or because they're the type of people who do their jobs properly regardless of the pay - or leave if they don't like it.
WWW, if I were a flying school owner, I wouldn't employ the type of people you're talking about to clean my aircraft, never mind fly them!!!!