Basic income was included to show that removing jobs is not necessarily bad, but it can have immediate negative effects. This is just an instance of consolidating wealth. It is moving a system which distributes wealth to many taxi drivers into a system which distributes wealth to a few people who run Uber. When there's no system in place to correct this imbalance, it contributes to the wealth gap between rich and poor which is accelerating in many other ways. When we see a massive shift of resources to just a few people, it leaves everyone worse off, even the wealthy ones, because we all have to live in a world in which more people are more disempowered and desperate. He just didn't go into detail because he likes short statements.