Generally, the program "sponsor" aims to benefit all three parties.
For the SFI, for the one who is the sponsor and new member-workers (that is PSA or CSA). SFI company is in the interest of more people working for them, because thus the company makes more money.
Let's face it - not all continue to work in SFI-in after registration.
Many try it, they can not cope and then leave, and that the company is not the goal.
Do not you?