As the saying goes, it couldn't happen to a nicer bunch of guys.
You wait decades for an existential crisis, then two come along at once. At least that's how it must feel for OPEC's beleaguered ministers. In the short term the market for their oil is being eroded by rising production outside their control. Looking further ahead, oil demand itself is under threat from the electrification of road transport. OPEC may not yet be dead, but its days are surely numbered.