Was not the bulk of the Jewish Immigration into the West Bank and Gaza the moving of Jews from other countries, like Russia, into that area.
Isreal didn't bring them in (on US Taxpayer expense) to live in Isreal, but to bulk up the jewish presence in that region - outside of Isreal proper.
Now while many have lived there for some extended time, the expansion of the jewish population there has been since 1990 - the last 15 years.
Even then, they didn't pay for what the got, it was provided by the joint financing of US money & Isreali politics.
Isreali Politics have changed since Sharron no longer has to deal with his life-long Nemisis, and enemy - Arafat
(Like Batman's Joker or Penguin - everlasting battle till all eternity)
Those in the Gaza Strip were offered between $ 200,000 - $ 300,000 to leave the land and houses that they had been given free of charge originally.
If they relocate, they have a pretty large nest egg to start with, and maybe, just maybe, that region can get on with non-confrontational living.