At least one domain where NO commercial activity is allowed. No buying, selling, advertising, trading. Companies who are convicted of mens rea transgression (along with whichever employees are guilty) lose ALL access to the internet in perpetuity.
AUPs lasted only a very short time after O'Reilly showed their Global Network Navigator site at Interop showcasing the capabilites of a new graphical web browser from NCSA called Mosaic that could - gasp! - display inline images along with the HTML hypertext! (Probably hard for the younger crowd here to believe, but early browsers had to open images in a separate window, sometimes with a separate image viewer helper program. Yeah, really. Mosaic was a game-changer, that made the vision of the modern web obvious to at least 1% of the people who saw it.)