This is patently false.
The US - and 'capitalists' do not want 'destabilization' - over and above all they want 'stability'.
Case and point: Saudi Arabia. Here you have an 'extremely conservative Islamic state' - which is culturally the furthest thing from the American ideal - and yet the Americans are their protectors - doing pretty much anything to preserve the stability of that regime. And for what: direct access to Oil - at market prices. That's it.
Same thing for Qatar, UAE, Kuwait, Egypt, Tunisia. And almost Libya until Gaddafi went to far oppressing an uprising, and remember the US supported Saddam so long as he wasn't invading allies like Kuwait.
Prosperity is not a zero-sum game. 100% of the Middle East could be thriving and plentiful if they organized themselves in a responsible manner. Most of them should have ample Oil surpluses to found basic progress.