Thats just not true with healthcare. It might be true for a lot of other things and I'll concede that if healthcare costs weren't so completely out of whack with what they should be it might be true. Take a simple MRI, the price can vary from $500 to over $13,000, there is absolutely zero reason for a price disparity that big and we have the same disparities with every medical procedure even in the same city. For reference, the average cost of a MRI in Japan is a little over $100 and there are even a few places in the US that you can pay $300ish cash for an MRI yet we have places billing $13,000 for the same exact thing. Even worse is that like just about everything else healthcare related they aren't required to, and never do, tell you the costs upfront. A mechanic can't work on your car and then tell you that he's charging you $15,000 after he has already completed the work yet that is exactly what happens in the healthcare industry. I understand that in certain emergency situations it wouldn't matter and that unforeseen things can happen but that doesn't mean they shouldn't be held to the same standards that every other industry is. This is just one of the problems but it's a big one. We are told, and I am sure it's true, that billing has added significant cost to medical procedures yet if I walk into a hospital and want to pay cash upfront I am charged an insanely higher rate than they would charge an insurance company despite having reduced costs and they don't have to wait to get paid! This is also illegal in most other sectors, you shouldn't be able to charge people getting the exact same treatment vastly different prices (often as much as 10X more) based only on how they pay. Imagine if the cost of buying a TV was 10X more if you paid cash versus financing it with XYZ company, that's basically what we are talking about.
Regardless, the Federal governments healthcare costs have been rising at roughly 8% a year for quite some time and there is absolutely zero reason to think that will slow down. In 2016 we spent $1.1 trillion at the Federal level on all of the healthcare related programs. Put it into your own calculator, 1.1 * 1.08 and hit enter and see what the number says after 4 times and then after 8 times. Then tell me how we can afford to pay it in 8 years under ANY tax plan.
So again, the bottom line is that we must address healthcare costs in this country and we don't have long to do it. When we do that insurance costs will follow suite.