We see it all the time, wifes stay with abusive husbands, the abused child clings to the abusive parent, even a whiped dog returns to his abusive master. They all do this to try and please the abuser, and have their life gain some peace that they desperatly need. The WT knows this, that is why they want the folks that are young, inexperienced, and naive. Then they can abuse them, gain their fear based loyalty, and them throw them back out to the congragations with nothing. Then, since the workers have no marketable skills, and even fewer social skills, their best bet, in the drones mind is to stay in the org. where they at least feel some since of security.
Those older ones that they are throwing out now, they too have "nowhere else to go". No money, no retirement, and no skills, or if they do have skills the modern workforce will not want them due to their age. They to are trapped, some might leave, seeing the unloving org. for what it is, but most will stay, and the WT knows that. It is a numbers game they can live with.