The analogy still holds. As has been pointed out above, most of the audience for a show like Burberry's consists of industry professionals -- buyers from department stores, buyers from NYC/Chicago/LA boutiques, magazine editors, designers of peripheral accessories, etc. Their interest is in using Burberry's products to further their own businesses. Burberry's interest is in promoting their platform over those of other, competing design houses. Both WWDC and fashion shows have plenty of spectators -- members of the public who are quite interested in what they are doing -- but both types of shows are designed primarily to further their respective product lines and associated businesses.