From my perspective as a paying customer, and given the problems 5e was put out with and the lack of care given by Catalyst after release, it is quite doubtful that I will be spending any of my money on 6e.
However, I am quite willing, and hope to be, proven wrong. If they can even just make 6e into 5e with the holes plugged and problems fixed, I will most certainly drop some ducats on it.