What we can't afford is to pay for doctors, medical conglomerates, and drug companies that demand a high profit for their services because ther is no governemnt regulations. Healthcare should not be a "free market commodity. And it isn't anyway because all the prices are fixed by collusion.
Medicare, by contrast, is very efficient, affordable, and available to everyone.
Alos, wiout taxes Jodic couldn't get to work, she wouldn't have educated workers, her workers wouldn't be healthy, and there would be no one who could afford to buy whatever she is tryin to sell.
Look at how well things work in Alabama, a state with no or low taxes, money going to all the corporations, and a population of sick, poor people who are dying.