I think a lot of creators will need PC's for the foreseeable future. Could you imagine a motion designer editing and colour grading 5tb of raw video footage on a tablet? The problem with tablets is storage. There's no doubt tablets will be as powerful as an i7 PC, but because of their small form factor and current storage technology there is no way to cram 3tb of storage into a tablet without the size of it being blown way out of proportion. The perception of tablets is they have to be smaller than laptops, lighter and fast. With current storage technology a tablet would be indistinguishable from a laptop because of weight, cooling and size factors.