Problem is that by the time they get there, it's likely too late. I haven't seen the data, but I suspect many of these oral treatments need to be started early in the infection.
Not my experience. I've got several family members who are vigorously antivax. One was laid out by covid for a week plus lost a brother-in-law to it. Another persuaded her sister to avoid the vaccine and the sister is still on oxygen after spending weeks in the hospital with covid.