from a saudi pov i dont see any upside to this
They are running out of oil and therefore planning their post oil economy. Minus certain glitches they managed to sell a lot of oil over the years at fair ( to them) prices but recently have been forced to sell for less than what they think is fair ( to stay relevant since the US now has the largest reserves [of oil] in the world).
Now they want to remove the false market constraint which OPEC has become with the rise of US reserves and the constant pressure from the US to keep the barrel prices low ( in order to keep Russia cash poor).
They are investing heavily in solar and want to get the most out of what remains in their reserves.