If there's so much love for the "Palestinians," why don't wealthy Arab nations support them?

I don’t want to debate whether or not the Palestinians should have their own state. I do want to know if there’s so much outrage on the part of Arabs, why don’t wealthy Arab nations like Saudi Arabia, the UAE, etc., support the so-called “Palestinians” and make their lives a bit better? In my opinion, the Israeli-Palestinian issue is kept alive to be used as a convenient excuse for savage behavior. Opinions?