I just found out that a JW friend of mine has just formed a company with several JWs, including some of my relatives. I know he realises it is probably not the truth but had put on hold doing anything about it for the sake of his wife. Now there is little hope of him leaving for some time. Not only does he stand to loose friends and relatives, now money is involved as well.
It is quickly apparent how powerful it is for a cult to strongly discourage association with non cult members. When all your contacts are JWs and you have vested financial interests to stay a JW there is yet another reason not to leave.
I wonder what percentage of JWs know it is not the truth yet stay regardless. I would guess as many as 10% know it is based on false hood but are too trapped to leave, and at least another 10% have serious doubts but the thought stopping question "where else would we go?" prevents them from looking further.