I think of infrastructure as things that need to be specially built rather than simply purchased. If they decide that this isn't working, they can always buy so

I think of infrastructure as things that need to be specially built rather than simply purchased. If they decide that this isn't working, they can always buy some buses and hire some drivers. They will be maintaining the same road infrastructure regardless of whether it's Ubers or buses driving on it. For the "what if" cases related to assaults, shouldn't there be fewer with Uber? With both buses and Ubers, the humans involved are the source of risk, but with Uber there are fewer humans involved; no "other passengers" unless they roll out UberPool. The huge advantage of doing this is that their upfront costs are minimised to just planning & a bunch of iPads.