Re: Driverless Uber ?
"Which one you think is (potentially in case of Uber) more profitable ?"
The 20% of earnings, 0% of liabilities one. Massively more profitable since the marginal cost of adding another vehicle is negligible.
If Uber wanted to be a transport company, owning or hiring vehicles and employing drivers they would do so already.
They don't want that, since it's not "disruptive". Or in plain English, there already exists a large body of legislation covering transport companies, taxi dispatchers, private hire vehicles, background checks, minimum wage, paid breaks and leave et al, and those are all costs that Uber currently avoids.
In the same way, once/if driverless cars that are licenced to carry passengers are working and allowed on our road, Uber will still make more profit by taking 20% of the earnings of an asset owned and maintained by someone else.
In general, it's a great deal more profitable being a middleman than being either buyer of seller.