And currently, the odds are against Tesla being successful in the ride-sharing market against Uber or in the transporting goods market against Uber/Amazon/etc.
I am not convinced.
Uber is in the lead until they start buying their own cars. After that they must maintain them. That is one big money sink.
assumption 1: all model 3 will all required autonomous HW
assumption 2: autonomous HW will come before regulators approve its usage
assumption 3: Model 3 becomes autonomous car via OTA update
assumption 4: ICE cars with autonomous HW will not be produced in 500k pieces per year at 35k price point
1+2+3+4: Tesla has the biggest fleet of autonomous capable vehicles at their hands to play as they see fit and update as need arise + their fleet sees fastest grow rate.
As far uber has ordered 500.000 MB class S with that will offer autonomous option sometime in the future. That fleet will be as expensive to buy as 1.5 M tesla cars around 2021. Uber wil have to pay for those MB cars - an expense, Tesla will see that kind of money as revenue.
Say MB will deliver those 500k S up to 2021. Regarding the size and wait time, one summoning a Tesla will get his autonomous ride sooner than one summoning an autonomous uber car.