Even if some are living there for economical reasons, israeli settlers know perfectly well their settlements are illegal, buit out of Israel on palestinian land, and illegal under international law. if they are to be rapatriated back to israel, they will not be able to say they're surprised. gaza settlers were rapatriated, proving it's perfectly doable with West bank and East jerusalem settlers too.
First refugees travelling on Hungarian bus arrive at Austrian border (Reuters)
from the article: Netanyahu: Next year in a more built up Jerusalem