I think this goes back to the "bigger piece of a smaller pie" mentality. There's a huge difference between someone capable of looking up answers to things that have been done before (SO) and someone capable of generating novel solutions to problems (an expert.) What will diminish will be the demand for people excellent at memorization while demand for problem solvers will go up. Only time will tell if it's net-0 but I think this is a healthy direction for professionals and businesses.