One would be crazy to bet on that on Polymarket. They had a bet for Tesla Robotaxi rollout before end of 2025 and it resolved to YES. So it must be like your FSD - Tesla is apparently already operating a general public access autonomus Robotaxi, maybe even 50% of the US population like the CEO said.
Nobody disputes that the car can drive itself 99% of the time. It can and it's a great system (well, opinions diverge, I mostly agree). But it's very far from a Robotaxi - for any reasonable person, Robotaxi means unsupervised rides, which Tesla is not currently doing at all. And they argue pretty strongly in court that any talk about unsupervised is just 'corporate puffery'.
This is similar to why one needs to keep an eye on todlers. 99% they are fine, but that 1% of time they will do something very dangerous.
I don't personally want to get into that kind of betting, but in theory...
If I had bet that purchasable Teslas wouldn't have level 3 or level 4 driving by 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, and 2025 I would have won every single one of those bets.
FSD is improving, but they finally put "supervised" in the name for a reason. It's a feature-packed level 2. That doesn't meet the bar.