And realistically why would have they. Russia did not stop too much production, just moved where it was sold. And increasing production would have driven price down making in long run less money in total for them.
First and foremost, that is not how the law of supply and demand works. If there is a sudden increase in demand, the equilibrium point rises, and they could have sold more at a higher price.
Plus, they've always done it before in a similar situation.
Plus, they've always done it before in a similar situation.