I wonder who's REALLY responsible for the state of the healthcare system as it was before ACA was done?
Lots of people? Various politicians inclined towards opposing regulation (which are indeed primarily GOP ways, but not exclusively), the insurance companies being what they are and unwilling to mitigating its problems, our medical care being what it is and unwilling and/or unable to mitigate its problems (though I forget quite when some of the laws exacerbating that side of things came in), demographic and economic shifts making noticing or doing anything about problems harder, bloody minded inertia, etc., etc., etc.
Pre-ACA we were just kinda' not really trying even as much as the ACA does to make our healthcare system be worth a shit. Letting the market be the market, with bit of help from whoever could be bribed on the legislative side of things, the occasional tidbit getting in there when things went
really badly. To the surprise of no one with a lick of sense, that lead to things going increasingly to shit.
... if you're talking responsibility, well, there's a lot of it to go around. The industry (insurance or otherwise) members complicit in doing all sorts of skeevy junk in the name of profit (shonus mentioned some probably a few dozen pages back, now, ferex), the politicians working to prevent anyone from stopping them, the ideologues that fornicated rhetoric into getting anyone to think either was a good idea, the voters that kept putting fucks in office that would cheerfully do so, the population in general that didn't get a fuckton louder, sooner, about the mess. Etc., etc., etc.
Bits and bobs among pretty much everyone, basically.
Primarily all the shits older than about mid thirties to early forties, since they're what's living that actually had the means to do much of anything about it while the problems were building up and starting to kick into high gear, but it falls on pretty much all of us with any particular societal/political weight to varying degrees. It takes a village to screw over a hospital as badly as we were screwing up our healthcare. Not to say we're not still humping it with vigor, mind, but since a bit before the ACA and in the time since, we've at least been trying not to thrust with quite so
much enthusiasm.