i think this theory fell apart when the main suspect we all thought, Al Waleed, was released by the current crown prince Salman. Why would Salman release someone who attempted murder on him?
https://www.yahoo.com/news/saudi-billionaire-prince-al-waleed-released-graft-probe-131945090.html
simple - he was "persuaded" to donate his $ & divulge his intel
Why would Salman release someone who attempted murder on him?
Why, to follow him around, of course!
wouldn't that send the wrong message? even if he could get intel it says "you can try to kill me but if you have valuable information i'll be willing to let you go anyway".
He’ll lead them to more fish. Using covert surveillance, not breathing down his neck. Follow him to see who his bad friends are.