I am thinking it's more that Tesla expects FSD to be competitive with whatever general purpose autonomous solutions Uber and Lyft want to field (via assumed clear superiority once FSD is ready), and on a longer timeline to be able to offer FSD autonomy vs human driver Uber/Lyft as well, though that will have some additional issues (such as dealing with drunk and disorderly passengers, cleanup, etc) beyond just the driving aspect. It seems probably they also go the route of letting Tesla owners participate in a ride hailing service like Uber/Lyft human vs human, and just take a smaller cut and/or some other benefit (perhaps free SC for every kWh spent in the Network).
I will admit I've always found the obsession (not just regarding Tesla) with autonomous taxis, and a future with a huge drop off in personal vehicle ownership, to be a bit cart-before-the-horse. "Blank-as-a-Service" is already out of control in the IT world, I'm really skeptical of it regarding physical things.
Not that I'm any kind of analyst, but if I was, I'd keep valuing the value of the Tesla Network at zero until it actually exists, because it's not just about self driving, but all the other issues that go with unattended people using you car and that some percentage of humans are terrible.
I'd value FSD as some kind of potential future thing, that I'm reasonably sure comes eventually, but not as an enabler for Tesla Network but to allow people to go on road trips while reading / watching movies / sleeping (hopefully), or having your car park itself and return to pick you up at the office/mall/etc (probably), etc - that has a value to the owners of the vehicles.
On the other hand, the oft ignored (outside of TMC) TE side of the business is clearly a huge thing just waiting to take off when given the chance.
But a lot of these uber-bull theses seem predicated on this future where "Millenials" never buy cars and just take ride hailing service everywhere, and thus see Tesla Network as some kind of golden goose. While I can see ownership decreasing among younger people become a trend, as you grow older and start a family you're going to want your own car. So I don't think the Tesla Network is going to be that big of a factor in the long run, compared to actual products (vehicles, TE, etc). It'll be some nice gravy on the side, but it's not the steak or the potatoes.