What if the frei stop the money-flow? They could be in for a rude awakening.
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Jews the world over will take up the slack for those who truly want to learn. The rest will join the workforce and start a huge wave of kiruv that would completely change the face of the medine – which is why, in the end, little or nothing will happen. Lapid needs his charedi bogeyman to get in again.
What if the US turns off the spigot and stops supporting the medine?
Answer: the frei would run to America (or to the countries that issue them EU passports based on their origins) as dejected refugees, and a core of charedim would remain and find some way to live in peace among the Arabs as they did in Ottoman and British times – probably running their own economy of small and not-so-small businesses and bettering their lot as well.