You're making it too complicated, which I always take as a sign someone doesn't understand something. Ditto oversimplification, per Einstein.
What you're missing with op amps is feedback, which brings even a lousy op amp comes close to ideal. They self-correct. That's why we use them.
Free markets aren't perfect. They don't have to be. Markets driven by economic self-interest self-correct if you set the rules right. That result holds true over a broad range of conditions, and the rules don't even have to be very good. The players compete to best serve society, as measured by their customers' (the citizens') willingness to trade their own hard-earned money for whatever good or service the producer offers.
The usual caveats apply.
- Setting the rules right is not accomplished by some guy with a teleprompter deciding to try a hand at designing cars, or power plants or batteries; or deciding to plunder and redistribute things to his supporters, or other such. That kind of looting generates fear, causing people to clam up. Rational people fear Barack Obama,. They hunker down, seek shelter, and run from him if they can.
- Neither can the guy with the teleprompter replace the function of local feedback by constantly diddling from afar with a large phase delay, imperfect knowledge, and no idea what the hell he's doing. Like adding a bizarre, emotional network that's non-linear and non- monotonic in time and voltage to an op-amp's feedback, that makes the thing wildly unstable. It also re-directs the system from serving the public good, to serving political self-interest.
- The economic self-interest requirement is violated when you take the rewards of productive activity and redistribute them to unproductive enterprises. Over some continum it makes more and more sense to suck off the public dole than to work and produce things.
You speak of government interventions with the faith that people are too dumb to manage their own affairs, and that a gaggle of politicians can ride the gain and offset controls and close all the necessary feedback loops in real time to better effect. That view is flawed in every respect. Op amps aren't very smart, but they control themselves extremely well from one, single, simple guiding principle, provided you don't heap too many parasitic and or perverse burdens on them.
You, at bottom, want to replace the op-amp's simple, clear, linear mandate--subtract and multiply--with Obamacare and produce a stable, predictable, optimized output. Good luck with that.
-- Cheers, James Arthur