9 times out of 10 (possibly even more) the "ads" on a DVD/BR are trailers (also a form of content) for other movies by the same people involved in the movie you're about to watch. I don't really have an issue with that. There is usually at least one trailer for a movie I've not seen and it reminds me to. And in my experience, I've usually been able to fastforward through them even if you can not directly skip them. Aside from the Anit-Piracy and FBI things, I've never seen an actual commercial for a product (Pepsi, Honda, etc) on my rented/purchase disk.