I think it will move this corruption only lower down the system.
If everyone will start looking for instructor jobs, only those who is paying under the table to CGI will get that job. And who will that be? Parents-sponsored guys, that dont know nothing them self at all.
And few of the smartest kids in the class. But what should rest of the guys do? Not the top-notch, but still good, hard-working students?
And do you want YOUR instructor to have close to 0 knowledge? Well, that exactly what will happen at schools!