They didn't really need the investment to plant the spies. He just applied for a job and got it. Any foreign spy can do the same and nothing will change.
To hear some other people talk, this is "conspiracy" territory now. But c'mon, we're supposed to believe that some nobody henchmen are solely responsible for this and ignore the fact that the Saudis own a third of the company.
Without proof for your second part... yes.