Not necessarily true. Uber the company maybe operating at a loss but rides are not operating at a loss AFAIK. Kind of like Amazon in its earlier days, where they reinvested their revenue in growth.
There are no real magical accounting tricks. At the end of the day (quarter) you will be forced to account for your cashflow. Cashflow always gives the at the moment reality of the company. Before folks reply - Amazon doesn't count. Amazon is an enigma.