In a nutshell, the sovereign debt crisis. If you don't realize there's a sovereign debt crisis (ongoing across years), or even more accurately, a wide variety of sovereign debt crises, or even more accurately, a wide variety of debt crises of both sovereign and private entities, well, your governments and some of the more government-adjacent private entities have bent a lot of resources into make sure that's the case and convincing that it's just peachy when they borrow money, if not outright a boon, without regard to how much they borrow or how much they've already borrowed. They may have convinced you that this is true, but they know better.

Whatever happens and however it resolves, there aren't a lot of options where they retain as much power as they have now for very long. (Even if the top people maintain control they're going to be cutting loose a lot of lower level elites because they'll have to because they won't be able to maintain their upkeep.) The wheel turns and we're in that phase where they're still in power, but have begun to feel their decline. Human psychology fears and feels loss much more keenly than gain and they both fear and feel a lot of loss of power underneath the veneer they maintain.