Most people in this country had/have insurance through their employers. As you correctly said, the poor people were taken care of. I remember seeing a recent census that showed something like 35% of those counted in the uninsured category made over $50,000 a year. Those people go to Disneyworld, and have cell phones and cable TV and computers....my priorities before my husband & I started to finally do well financially were mortgage, insurance, and savings. Maybe people needed to reassess their priorities.
Medical costs are WAY too high and have been for decades. That isn't something anyone with a functioning brain would debate. But the ACA is not going to fix that. Yes, it enabled people who couldn't buy private insurance on the market because of pre-existing conditions a chance to get insurance, no question about that. The ACA isn't a total disaster. But for the majority of Americans, it isn't going to help at all. It hardly makes "healthcare affordable" for the rest of us.