My beef is that the CC license locks creative people into a perpetual (lifetime) licence if at any time in the future they wish to work on their art edited using an Adobe product other than LR. Could you imagine any creative artist facing this kind of brick wall? "Sorry, but if you want to work up that sketch into a final painting, you will need to spend, spend spend on our product first." Or, "sorry, but if you wish to re-work that symphony, you'll need to buy into our product first." Thank goodness LR5 is as good as it is for photographers, otherwise I would be jumping ship to Phase1 or Aperture!
You an read my full rant on my PhotoBlog