take me for example. I have no idea how much my employer contributes to my premiums. the only way I can think of to estimate the cost is to look up typical pricing for comparable ACA plans. if we switched to universal healthcare, I have no way of knowing what fraction of those premiums would be tacked back onto my salary versus simply pocketed by my employer. all I know is that things are currently okay for me, and as long as I do the in/out-of-network dance correctly, my exposure is limited to my out-of-pocket max. outside of ideological/moral concerns, there's really no incentive for me to rock the boat.