As a bit of a follow-up to judeanoncapta's question, don't you think that the haredi demographic would be a perfect fit to replace cheap arab labor? That is, once they are given the green light by the gedolim to enter the workforce in greater numbers. The particular haredi theology enables them to be poorer than poor and still be happy, and all it would take is one word from the gedolim and over night you'd see less haredim in the beis midrash (only the elite learners would remain) and more getting jobs. They could have low-paying jobs and do the kind of labor (construction, bus driving etc) that the Arabs do now, that the secular Jews and more worldly religious Jews would probably never be willing to do at that pay level. Don't you think this haredi demographic could be a potential replacement for the Arabs when we kick the ragheads to Saudi Arabia?
Perhaps G-d in his infinite mercy blessed this demographic to such numbers to fit in a diverse Jewish society in this way, once we finally man-up and get rid of the Arab 5th column. He is giving us chance upon chance.