Except that an anti-viral for SAR viruses of any flavour doesn't exist, would cost billions and years to attempt development with little chance of success, the only related anti-viral treatment is Tamiflu and it's efficacy is so miserable that the FDA just delisted it. About as useful as echinacea for colds.
As I've said, the history and status quo on anti-viral medications is very very weak. Whereas vaccines for viral infection have existed for decades with good to excellent track records. To wit the current Covid vaccines were developed in record time (the mRNA tech has existed for 20 years, just needed production and scaling issues resolved) and have proved to be very effective. Orders of magnitude better than any viral medication yet developed. AND at a fraction of the cost, around $15 CAD per person for us.
Your original posts seemed a little conspiracy flavoured, you were curious why no treatment, lack of real effort by the medical research community as to why they were ignoring this. They're ignoring it because it's a dead end and everyone in the field knows it.