Jim, I'm a little confused. Shouldn't the title be about healthware and the constitution not Originalism? You said you didn't want to discuss originalism.
In any case, I'm not sure anyone's arguing the government can't create government paid for healthcare. After all, we have had Medicare and Medicaid for decades. I think the argument, if you're referring to Obamacare, was the requirement to pay a penalty if you didn't buy healthcare insurance. Most felt that would be unconstitutional because then the government could force private citizens to become customers of particular private companies which would be unconstitutional. That was cleverly explained by Chief Justice Roberts when he called it a tax not a penalty. Being a tax, which the government is allowed to do per the constitution, made Obamacare legal.