Esther, we live in a materialistic world. If the government would not have facilitated their entry into Gaza and provided armed escort by thousands of soldiers, these fortune hunters, as you consider them, would not have risked it. In a previous post, someone mentioned the giveaway programs for those that accepted to live at the frontline Sderot and now at Kiryat Shmona. The 300,000 people now living on the West Bank did not simply go there, as you say, for religious reasons but for cheap costing lands practically donated by the government that had grabbed it for free and having paved for them private secure roads, fences and other security apparatus as well as the required infrastructure. I cannot blame the individual Israeli for having jumped on that offer if he could not afford regular housing in Israel proper. The government is the guilty party in both places and should have provided the same incentives for other available places like in central and northern Galilee and the Negev.
from the article: Each Gaza evacuee family to get NIS 1.5-2 million in compensation