Can someone help me understand sponsoring a little better?

So we all know that u gotta get sponsored by a brand to show their stuff on TV or whatever but my question is..why aren’t u allowed to display products even if you aren’t sponsored? Is it simply because you don’t want to give X or Y company attraction unless you are getting paid by them or is there more to it?Sorry if its a lame question :$ via /r/business https://ift.tt/2AFDyo5