Likely enough for Uber to bet on it.
The whole idea behind the company was bet that once they capture the majority of market via aggressive expansion, the self driving auto will hit the market allowing them to cut out people from the business.
Seems like they underestimated and going to crash (or they pivot and change the model to actually include human drivers as part of the business).
As much as I believe self-driving cars will be a thing, that kind of technology takes years to develop and is hard to predict when it will be ready.
Making a big bet that self-driving cars will work by a specific date is gambling.