Way too early IMO. Think about something like Google Fiber. It looked extremely promising, but the inability (or lack of desire) to expand it left it as mostly irrelevant. With Waymo they also have some major issues to work out as they're bleeding billions while charging as much, if not more, as human driven cars charge. It might end up getting worked out in the future and turned into something neat, or it might just eventually find itself on the ever-growing scrap-heap.