Just read the article and watched the video. The video has areas that have no antibiotics that's where the bacteria start. Further in areas have higher concentrations of antibiotics. The bacteria colonizes into the antibacteria areas they are literally invading the antibiotic material / area.

I have an 8 disc rental plan for my mother who is disabled. She watches dvds most of her waking hours. Some days she goes through all 8 discs in one day. So there certainly are legitimate users that might watch 3, 5, or 8 discs in a single day.

George