Saudi Arabia and UAE exert a lot of economic power with their oil reserves and control OPEC (together they make about half of Opec's oil and Opec controls about 40% of the world's oil supply). Stop their terrorists by banning everyone or risk an even bigger economic attack. Not a great choice.

As to Egypt, from what I've read, the current Egyptian government is trying to play ball with the US. No need to upend things.

Obama's people knew what they were doing (and probably knew a lot more than you or I). I'd love to know why Lebanon isn't on the list though.