I disagree, largely because you've cherry-picked parts of the overall strategy. The world is obviously not going to go from purely human driven to 100% autonomous overnight. There will be an intermediate phase where initially some few cars will be autonomous and privately owned, and for those owners making use of the car's full lifetime to serve as a taxi would be a no-brainer. It could pay off your (very expensive) Tesla in the matter of a year or two.
After the market for on-demand autonomous taxis is oversaturated, Tesla's plan is actually to stop selling vehicles altogether, or reduce it drastically. Musk has said that FSD vehicles will likely not be for sale after this point, so the "consumer-operated robotaxi" is inherently an intermediate solution.
Vehicle ownership will drastically change in nature after the advent of AVs. Tesla isn't going to be unique to having to adapt to this.