Much more likely they offer an assistance program so the uninsured poor don't have to pay much. But insurance companies get it for the negotiated discount price of $5000. Retails at $8000, which Medicare has to pay.

As for giving 140,000 treatments away, that's them getting a whole bunch of drug trials for free! If it works in some situations (which I bet it does) they have about 300 million more potential customers in the US alone. Not to mention the rest of the world.

There is also the distinct possibility that a Covid-19 attack aborted with an antiviral would not get you IgG antibodies. So you could catch it again, and be a repeat customer.