Do not overlook the role of the middlemen
There is another group of people who probably are more to blame than students or FTO's. The agents that promise the world to the students (/parents) are probably the root cause of this discontent. Their selling involves a trust network, so the parents and students do not end up doing the due diligence they should. They would match a student with an FTO with no concern about hopes, aspirations or capabilities - just a fat commission.
A few of the posters here seem to have an unfortunate view about foreign/indian students. Maybe it is the perception that their path has been easy - parents are paying, compared to our guys here. This is not a profession in which these views would take you very far. Who has been able to choose the nationalities of people they work with, bosses, or even pax?