I'm not sure if they still do, but PBS at least used to conclude a lot of shows with, "... is brought to you by the corporation for public broadcasting, and by viewers like you." I assumed Viewers Like You was just another company of some kind.
A childhood belief about tv

others believed things like this
- i used to believe that public houses were just houses were the public could go and liveAnon
- I thought that the insurance company Aflac was owned by Ben AffleckAnon
- I always though as a kid that "To Let" signs were public conveniences with an I missing. Really.— Col
- When I was a kid, I wondered why they called it "public hair" when it was so private.Anon
- my mum told me that the 'public' park was closing so she could go home— xx-lotty-pop-xx
- I used to think that a company had boats all over the world making waves, and airplanes making cloudsAnon