Because since 2012, multiple in-vitro studies have demonstrated that IVM inhibits the replication of a wide range of viruses. Nature Magazine published a 2020 study reviewing 50 years of research finding IVM “highly effective against microorganisms including some viruses,” and reporting the results in animal studies demonstrating “antiviral effects of ivermectin in viruses such as Zika, dengue, yellow fever, West Nile . . .”5
Ivermectin was already well understood to have antiviral properties with a superior record of decades of safe use.
However, by 2020, it was off patent and cheap to produce and sell, hence useless for the generation of outsized profits.
The opposite of a desirable product for the neo-fascist monopoly capitalist pharma cartel.