Except that our experience shows that over time competition decreases and things like regulatory capture happen so it becomes harder for anyone small to enter i

Except that our experience shows that over time competition decreases and things like regulatory capture happen so it becomes harder for anyone small to enter into competition and then prices get hiked up. And the cars and autonomous driving software itself is becoming more expensive and more subscription-based over time so those rents are going to have to be passed on to the consumer. Large autonomous taxi services may be able to strike better deals or even build their own software/vehicles if they're big enough, but you're not going to be able to compete with them effectively by purchasing a Tesla (and presumably consumer prices will rise as there's less individual-owned vehicles and companies go seeking after only the highest margins and abandon the toyota-corolla market to the robotaxi corporations).