Even with 50%+1 it would take many years to change the BOD and put your own people. In any case we are dreaming here as the saudis are just investors like you and me and nowhere even close to that range. Maybe we should get back to reality of the question.
"When fascism comes to America, it will be wrapped in the flag and carrying a cross." - Sinclair Lewis
"Those Who Would Sacrifice Liberty for Security Deserve Neither." -Benjamin Franklin