I agree their isn't just one factor as to why the GB are high tailing it to the boonies to live out their dying days on a cleaned up contaminated chemical dump site of a International Nickel(toxic) Company.
http://www.townofwarwick.org/departments/seqr_docs/watchtower_final_findings_statement_080112.pdf
Perhaps the money issue is primary like Finkle says, and second is lack of privacy maybe third is they feel embarrassed in front of so many people because of all the bad press they are getting all around the world and so the GB would feel much more comfortable in the woods in a gated and guarded compound with no reporters or other unwanted guests allowed near them. It is definitely motivated on many levels by a desire to try and escape reality and live in a supernatural dream world where they have the keys to the kingdom and they decide who gains entry. Just shall we say "a fore taste" if you will of their ruling with JC in the heaven, them being out in the boonies being waited on hand and foot by members of the lower class 'great crowd' subject to their drive for more power over them with the matra 'Listen Obey and Be Blessed'.
The ideal retirement home for these crabby, crotchety, flappy mouth old geezers running this scam.
The more I look at it the more Jim Jones move to the jungle share similarities.