That doesn't work, for the exact example you cite. I am not rich enough to afford to buy a TV ad (this includes both production costs and airtime - I'm not an advertising expert nor a good actor so I'd need to hire people to make a good ad). The only way I can afford to get a TV ad out is to get a bunch of like minded people together: create a company with the express purpose of buying our ad, but your just prohibited our company from buying that ad.