I'm not a FDA expert but I think I remember reading that if a previously approved treatment/drug was found to be effective in treating COIVD, the "emergency use authorization" designation for newly concocted mRNA serums would have been revoked. So wave bye-bye to the mRNA shots... Maybe someone who has more time or knowledge on this and could chime in.
If that's true, big pharma and those that they have in their pocket have a financial incentive to not look for or adequately test alternatives that might compete against their newly developed miracle drug . I'm not a big conspiracy dude but I don't trust big pharma and have lost a lot of confidence with the FDA, WHO and other related organizations to be transparent and independent from politics and special interests.
Follow the money.