Saudi billionaire businessman Prince Alwaleed bin Talal told me we will not see $100-a-barrel oil again. The plunge in oil prices has been one of the biggest stories of the year. And while cheap gasoline is good for consumers, the negative impact of a 50% decline in oil has been wide and deep, especially for major oil producers such as Saudi Arabia and Russia. Even oil-producing Texas has felt a hit. The astute investor and prince of the Saudi royal family spoke to me exclusively last week as prices spiraled below $50 a barrel. He also predicted the move would dampen what has been one of the big U.S. growth stories: the shale revolution. In fact, in the last two weeks, several major rig operators said they had received early cancellation notices for rig contracts. Companies apparently would rather pay to cancel rig agreements than keep drilling at these prices. His royal highness, who has been critical of Saudi Arabia’s policies that have allowed prices to fall, called the theory of a plan to hurt Russian President Putin with cheap oil “baloney” and said the sharp sell-off has put the Saudis “in bed” with the Russians. The interview has been edited for clarity and length.