I don't really understand why you dislike how Facebook does this: you log in to Facebook as you, you create a Page. You are then an Administrator of the Page. You can add other people as Administrators of the Page if you wish. I guess I could see wanting to have an account for a corporate entity (so it can be a legal administrator and grant lessor access to individuals it employs), but certainly not for the brands themselves.
Also, you can always change the category your Page is in (I don't think this was the case a long time ago, but it is now: Facebook keeps improving), so you can try to measure the effect and optimize your choice of placement.