It isn't a matter of "enough" profit. Uber wants to get so big, and make prices so low, that they decimate current competitors and discourage future ones. It'

It isn't a matter of "enough" profit. Uber wants to get so big, and make prices so low, that they decimate current competitors and discourage future ones. It's a winner-take-all model; a land grab. The drivers are just along for the ride. Low(er) pricing not only supports faster growth, but it gets enabled by the scale and efficiency of its network. That becomes a moat for Uber. Raising pricing can come later, and with autonomous cars in the future. Getting the global network huge is only the precursor.