​The House of Saud's existential enemy has been given new life without sanctions . . .

“OPEC is Dead”

. . . the House of Saud must pump oil, or it will die. Of course, OPEC is dead.

"Times have changed, though, and the country’s new man-behind-the-throne—the 31 year old deputy crown prince Mohammed bin Salman—has little interest in ceding Saudi market share in pursuit of higher prices while the rest of OPEC gets a free ride."

Exactly. The House of Saud cannot afford to build Iran's coffers by cutting revenue. With Iran sans sanctions, The House of Saud is in dire straits for Iran already has an integrated economy, while Saud has an economy limited to oil alone. If allowed, Iran will use its oil revenue to build its integrated economy. This is the reason we are only now seeing the House of Saud pay attention to its non-oil economy, intent on selling off a portion of ARAMCO to fund a $2 trillion attempt to see if it can get the Arabs to actually go to work. Good luck with that. The reason they did not do it before? They do not think it is possible; they are desperate!

The Islamic Reformation is coming, Iran will anchor the Shia, The House of Saud will Anchor the Sunni, the outcome should be the sublimation of Salafism/Wahhabism into a reformed Islam more in tune with the Enlightened West. And optimistically, this will trigger an Islamic Enlightenment. 

To do this the House of Saud, and its alliance with Wahhabism must fall. It's Game of Thrones with consequences!