Plus even if we posit nefarious forces, we should also account for nefarious forces which want the sickness gone.

If you're seriously sick you aren't making money because you can't work or all your money goes to Evil Pharma Co, then the Evil Government doesn't like that, because they can't wring taxes out of you. (Which they prefer since it's easier than fighting Evil Pharma Co.)

Meanwhile, The Shadow Government wants you to be healthy enough to work every day, or else they won't finish the navigation beacons for the alien invasion.