It' kinda more interesting to find out why you can't still grasp that we are not talking about short or long terms. Just in case, we are talking about the current situation, and the poster which first said about decreasing availability of crude oil now (i.e. present time) seems to be no longer claiming that (because facts are obviously not confirming that claim). Other than that, you should make up your mind finally what you are claiming yourself, i.e. short vs long term...
But, as I said, your forecasts are out of scope of this discussion, independent of their time horizon or accuracy (or lack thereof)
Really hard to understand stuff in context right?
Short-term = currently
You may want to consult a dictionary
Small nations were already trying to restrict the production of oil and wanted to increase the price while Saudi was against it citing different reasons and now they knew if they didnt cut down the production then they will not recover from this mess and so it might be the reason for the change of heart.
Nations such as Venezuela and Angola were desperate for a production cut in 2014 and 2015, but the Saudis were adamant in their refusal for any cutback in production. Now with their Forex reserves evaporating at an alarming pace, the Saudis want to cap the production. But unfortunately for them, it is the US frackers who hold the key now. The days of the OPEC are over.
There may be a lot of factors at play
I think that with the current price of crude oil over 50 dollars per barrel the Saudis should be more than happy. Yes, I know that their budget is balanced at around 90 dollars, but it is not the price of oil which seems to be playing the most important role in this game of thrones. My guess is that Trump won't be very friendly toward them up to a point of withdrawing military bases from Saudi Arabia. And that would mean the end of the royal family eventually given how much they are hated in the Islamic world (and elsewhere, for that matter)