Some do have lots of money, but not Egypt or Jordan, the two most reasonable destinations. If they take in the Palestinians, then they have a perpetual, aggrieved, refugee population. There aren't many people who get kicked out of their home and just say, "well, that's over and done with. On to the next thing." Also, assimilating a few million people into a relatively small country, especially when those people are showing up all at once with nothing but the clothes on their backs, would be pretty tough for most countries. Sure, some of the rich gulf states could do something financially, but most of the rich states are small. For example, the UAE (not all of which are rich) would be adding about 20% of their population. Saudi Arabia would be better able to absorb the number from a numerical standpoint, but they already have a pretty dubious reputation for handling immigrant workers, let alone absorbing a whole population. Egypt has the size, but not the money. Jordan has neither the size nor the money. Lebanon...has nothing going for it at all.