Having said that, it's definitely true that there are basically no meaningful barriers to entry beyond mindshare (after all, every Uber driver is also running Lyft, and likewise for the drivers -- and Lyft's better driver rates are also why I have to use Lyft when I leave for the airport at 3 AM).
Things like UberEATS may provide some stickiness, but I'm far from sold that their basic economics are going to work in the long run, let alone keep them in the market pole position.
I get that it makes sense from Uber's point of view -- increasing driver utilization and smoothing out the supply side of the relationship is probably great for their unit economics. But they actually have to execute it well if they expect people like me to use it.
They don't have to raise prices, they have to cut costs. This will be quite straightforward once there's no driver to pay.
If I can produce as many self-driving cars as I want (i.e. I'm Ford), what is my incentive to sell them to you?
I can make more money by owning them myself. Remember also, my cost to make is less than your cost to buy. Then I just tell them to drive off the assembly line and start picking up fares.
If self-driving cars are really a panacea, then the car manufacturers will be the ones who profit. It will also lead to extreme consolidation amongst low end manufacturers, since those with the best self-driving systems will make a lot more money per car from self-ownership than regular cars sold to customers can earn over their lifetimes.
Self-driving cars as a service have all the problems of personal rapid transit except track cost. Personal rapid transit has never been very successful. There are at least four startups selling driverless PRT shuttles right now, and nobody has more than one demo installation. Still, shuttle buses ought to be driverless very soon.
(Olli, from Local Motors, is very cute.[1] It talks to its riders, and using IBM Watson, can advise on restaurants and points of interest.)
I do think that between Ford and Uber, Ford is much better equipped to handle maintenance of a giant fleet of cars. Uber has zero experience in this area, whereas Ford has a giant, distributed network of dealers. If cars are predominantly owned by the company rather than being sold to consumers, these dealers might be in a position to pivot towards fleet management rather than sales and service.
However, I don't think any of this will happen for the simple fact that self-driving cars are not as close as people currently think. Maybe trucks and buses, but even then I remain skeptical.
The good news is that if Uber goes under, it's easy to replace them. Uber and Lyft pulled out of Austin TX last May over required fingerprinting of drivers. Ten competitors sprang up to replace Uber and Lyft. They're doing fine.[1]
[1] http://www.curbed.com/2016/12/7/13828514/uber-lyft-ride-aust...