10% is a bit higher than we need to charge and 0% is not sustainable. This why Lyft is burning so much money. No need to do 0% percent, sensible drivers know you need to make some money too.
Well, if Lines work out in Lyft's favor, it could in theory make money (or lose money) even at 0% take rate. But of course, not all driver are getting 0% so it is viable.