Many operators are shutting in wells in response to low prices. What the large operators want is freedom to operate as they see fit, not be forced by governmental mandates or specific cut requirements. I work for one of the three you mentioned and can tell you first hand that production is being curtailed. Not in a hugely impactful way immediately, but we are reducing drilling rig count by 80%, most recently drilled wells will be DUCs, and a fair number of wells are being shut in. The production cuts will likely be managed as we see what current efforts do to support prices. Won't be enough right away, but if many operators do the same it will have a modest positive effect given time. My guess is the cuts won't be enough to balance the market for the foreseeable future as demand destruction is simply too great and the world is awash in oil. Pain is here and will persist for a while, 2020 will not be fun.