Sure! The homeless guy is very likely uninsured. They might die in the streets because of this. The billionaire on the other hand would get higher quality healthcare. What would not be happening though, is the billionaire paying for the homeless guy’s healthcare.

Now of course, a consequence of that is the homeless man dying. Ethically, this is an incredibly shitty system. THAT’S why we need single payer universal healthcare. However, a consequence of that would be the rich paying for the poor people’s healthcare.