I'd rather see someone create really, really disruptive technology like a "personal privacy bubble" I can activate when I choose to. Something that will auto-blurr and auto-jam all video/audio. THAT is something people would like. "Want to film me? I opt out!"
Lol, people still buy adult books in stores? How about all those CCTV camera's? The camera's in stores can even tell if you're male/female and your general emotion (according to the lines in your face).
Question is: Do I even have the right not to be filmed? Somehow I think not... Apple did file a patent to disable iPhone video recording using lasers (to be used at concerts).