[Aspos]

There is a difference in the way it went for Saudis and Iranians. Saudis, not having the tech, capital, knowledge at the time, still retained ownership. Iranians did not. Saudis had enough bargaining power (and balls), Iranian Shakh agreed to exploitative concessions.

Those who had the tech, capital and expertise in the end just lined up in front of Saudis to be hired.