Very true Mikel, it won't stop things from being taken down however one of the reasons of Authorship is so that Google has a method of serving content from people who consistently produce good stuff. I suppose I have no solid proof of this but I would like to think that Google would serve content attached to an authroship profile before the copied content in search, especially if that is all a webmaster is doing as opposed to creating something original.
Also, going after people for stealing your content should be a business decision. Is it really worth going after someone if it means losing revenue because you have no time to do your primary job? I agree that it would be good to have copied content taken down but only if it makes good business sense.