I'm sure in time the technology will evolve and there won't be a new car on the road that wouldn't support FSD - just like it did with "horseless carriages". It will take some more time though and not all companies will be equally advanced. From what I've heard (from other sources too) I wouldn't want to be driven by a Tesla FSD at the moment.
> * horseless carriages won't avoid running into things whereas horses can see and instinctively won't run into a wall
Off topic, but interesting - if you think about it, we actually already had mostly-FSD in the 1890s. It just ate a whole lot of grass.