In commercial work, 'art' is pretty much whatever the client defines it as... If the client is paying you to do a pink hamster with bunny ears and a miniskirt, then that is exactly what you are supposed to do, to the best of your ability. The question of 'what is art' is a luxury you can afford only when you are either doing it as a hobby or are a genius in the process of redefining the term.

Also i really hate it when some people try to push art as some sort of mystical experience that can only be done from pure intuition. It is nothing of the sort, it is a skill and like any other skill it can be learnt by anyone. Sure, maybe not to the same level as a Leonardo or Michaelangelo, but almost anyone can get good enough to produce decent looking and interesting work. However getting there does require you to read and understand the 'manual' which in this case is Art Theory. The rules of composition, color, perspective have been developed and improved for centuries and if you don't take advantage of them you are only limiting your growth.

Taking a can of paint in each hand and splashing it around wildly only produces a big mess.