Warren just released her Medicare for all financing plan. It is based on several assumptions, but those assumptions are reasonable. Nonetheless, she probably won't get much support for it:
1. The Republicans will almost certainly use the lie, "THE DEMOCRATS WANT TO TAKE AWAY YER HEALTH CARE!!!!!!!!" as a fundamental talking point and scare tactic. Amazingly, even some Democrats are buying into it. It's bullshit (Warren's plan is to PROVIDE health care to all citizens), but as some of the second-tier Democratic candidates are desperately trying to gain traction, they've used the issue as an attack strategy against Warren, shifting their focus away from Biden, who is fading.
2. The money is certainly there--IF the Trump tax yummies for the rich and big corporations are rescinded. That probably could happen with a Democratic House and White House, but it might not be implemented quickly. And the Trump deficits will have to be addressed, further slowing things down.
3. We've discovered (sadly) just how racist and bigoted this country really is, as Trump was elected and support for him persists. Therefore, the mantra "Health care is a human right" isn't at all accepted by much of this country, as it is in the rest of the civilized world. Many people in the US strongly oppose (even if they won't say so out loud) the idea of free health care for the "inferior" classes and races. A lot of people also think that if you can't work and make money, you deserve to die. I suspect that all of our Trumpers think those two things (not that what they think matters).
4. There's a general angst in the Democratic party that since the primary goal is to get rid of Trump, and the impeachment process won't do that (it'll die in the Senate), they need a Presidential candidate who won't present Trump with an easy target. Bernie or Warren: SOOOOOOCIALISM! THEY WANT TO TAKE AWAY YER HEALTH CARE! Biden: the leftover residue from the Ukraine mess (as bullshit as that is, it's damaged him and would certainly be chewed on like an old bone if he won the nomination). Any of the other second-tier folks: they won't get the nomination, and if they do, every one has a vulnerability that will be exploited.
I actually don't understand all the Republican outrage over people getting health care, but they did burst a blood vessel trying to destroy Obamacare over a six-year period, and almost succeeded, so I have to conclude that outrage is genuine (after a fashion, anyway). It could be the same thing as the climate change debate: Big Pharma and health care providers are writing checks to Republicans. But I really think it's plain old racism: "AH DOESN'T WANTS MAH TAX DOLLAHS TO GO TO TAKING CARE OF SOME N***** B****!!!!!"
So, sadly, I think that Warren should just drop it and support a continuation and expansion of Obamacare. We're too primitive a society to implement universal health care, and we won't be advanced enough to do so until we get rid of all the nasty old rich white men who currently have a stranglehold on power.
**Cue Trumper insults**