Uber, the globally available taxi company, is valued 8 times less than tesla. If you are now able to kill all the costs for the taxi driving and reduce the cost for the car also, how much revenue is left?
Robotaxi has to be cheaper than a normal taxi to kill taxis. The margin of that company can't be that much more than a company like uber.
And uber itself will also invest in this, as every other car company. XPeng and co everyone who is building or working on this, will not just idly looking and waiting for tesla to just take 'whatever this cake' will look like.
For me it becomes a complet game changer if it becomes so reliable so extrem reliable, that i can order a car at night, a fresh bed / couch is then in the car and i can lie down while it drives me a few hundred kilometers away.