Refineries in US are making even bigger profits. They even skip on maintenance running at 95% capacity non-stop.
Someone else suggested they see $85/bbl as the ideal price. I don't know if that is true, but it seems reasonable.
This is a really complex optimization problem, but slowing EV adoption, which low gas prices help, is likely the better course for a few more years. Eventually just gouge the petrol users left is the most profit, but I don't think that has been reached yet.