Why do record companies try to make things (boy bands, teen pop singers, etc.) work when they don't work?

Its a business and its all about money. This business in particular will whore anybody out and the little girls love the cute little boys, boy band etc. Justin Beiber doesnt need to be remembered he made like $50 Million dollars last year selling his movie, nail polish, merchandise, a book, etc as long as little girls will gush and spend all their allowance on that ****, the industry will push it.