Now would you want McDonalds to research Chipotle or stop outbreaks in their own stores? Seems pretty obvious to me. Perhaps I'm missing something?
Ultimately Chipotle is already incentivized to figure it out themselves, unless the argument is Chipotle is intentionally infecting their own customers?
Going back to the original point - what the USA should do for its own citizens won't change regardless of whether COVID was an accident, from wild game, etc.