I suppose that comes down to how ethical the business is, which note is by no means an obligation.
Turning people away will lose you money but being ethical will ensure you succed in the long term. I think that's more of a long term business decision to make.
Another debatable point would be, what would make ILS qualified to decide the future of someone and say they are not suitable? Would it not be far worse to turn someone away and tell them they are not suitable and put them off for life than taking their money, training them up and for them to then fail of their own accord?