Yeah, that's oversimplifying it, but it's not like they own factories or storefronts or need to buy access to expensive services or something. The vast majority of their "employees" are independent contractors with no healthcare or retirement benefits who get paid by the ride (so Lyft doesn't lose out when business is slow).
It seems like it should be a license to print money, but somehow they're losing cash hand over fist. Are they subsidizing rides all over the world?