According to a pay-walled article in The Information:
Thanks to a secret software-based effort within Uber called "Hell," Uber could track how many Lyft drivers were available for new rides and where they were[.] [...] "Hell" showed Uber employees which of the tracked drivers were driving for both Lyft and Uber, helping Uber figure out how to lure those drivers away from its rival.
additional coverage:
(Score: 1, Insightful) by Anonymous Coward on Friday April 14 2017, @05:27PM (1 child)
This war mentality has to go. Our strength is in community and working together. Competition can be good, but right now it is destroying our civilization.
(Score: 2) by bob_super on Friday April 14 2017, @06:17PM
> working together
I'm pretty sure I'm working harder than Joe, so I should get more than him.
Competition is natural, you evil commie!