Mariemaud, although I admit than in a certain way, you may be right, I would like to add a few things
The association between art and business is quite new, or have taken a new form in the last decades. Before, that was either you were starving (Dostoïeski) or else you were rich (Goethe) but because you were admired by intelligent people (either way, you didn't have to sacrifice your talent to be popular).
The pop music (as opposed as the classical music) was something new: for the first time people starting to SELL things to people (happily, some artist are not in this way of acting, some are not totally and mix their talent with some... don't know... money-willing?)
That's the same with cinema, and as this art is really new, you can feel the difference. I don't know if you love "artistic" cinema (which is not a problem I mean... that's one of the few arts that are very demanding with the people who try to get interested in), but there is a HUGE difference, between Steven Spielberg, and some artists like Tarkovski or Godard (both were really cruel with Spielberg, which is not useful actually...some of his films are great).
I still believe that popular cinema, popular music, etc cannot be called art (there's no popular painting because everyone pretend to love famous things - Picasso Warhol etc - without understanding their work).
However, since I become interested in fashion, I learned that
some designers are a little bit more than simple dress makers, some have a vision (Rick Owens, Margiela maybe, etc etc) and you buy more than a piece of fabric. And although I love McQueen, his "themed" collections are not art because he is just inspired by music/whatever, and doesn't create anything.
Overall, the more than fashion do, is that this summer, skirts will be shorts, and skinny pants will be hype on guys. Which is sad, because even if they can't create actual art, some can do better. (and the others just stop with this trends-crap-things *how ridiculous is the concept or trend, which CAN'T be decided by a few designers, and change every seasons, but truly depends on the society you are living in* and make beautiful, quality clothing...)