My point is oil companies don't produce just because some oil fields opened up. They produce based on their forecast of demand. You could open up everything and they probably, in my view, would produce almost nothing additional. They would IN THE FUTURE, probably, but not now. For one thing they currently are pretty much maxed out on drill rigs and workers and capital etc. and they have fields still available to them on private lands for more production if they see fit.
They produce more because they think it will be profitable, a solid return on investment, not because Alaska opened up. Now if prices went well over $100 they would start if they could.
Ant new oil field away from current fields requires a high level of investment, like Alaska, and it isn't worth it at current pricing. They'd rather just drill another hole in the Permian.