Probably emigrate, to be honest. A brain drain or loss of labor might do the trick. It's the ultimate peaceful vote of no confidence. The system isn't changing right now because it works for those in power. Without bodies to do the work, they'll change their tone.

I don't expect this to happen, though. A lot of engineers are comfy with the top-tier healthcare provided by their employers, so they're likely not willing to leave America. (There are a lot of other perks of our country too, I'm just highlighting this one dimension. I'm certainly not going to leave over this even though I also feel my efforts to affect change are futile.)

I suspect that there are even people who believe healthcare isn't a right.