The X is not competitive with proper 3-row SUVs as the 3rd row is not usable enough, and it was cannibalized by the Y which is not an upmarket luxury SUV as luxurious as EV SUVs that are in the Model X's price range.
Similar story goes for the Model S: they're discontinuing their upper luxury full-size sedan and no longer compete in that market at all.
Since Tesla doesn't split the numbers out it's hard to say but I would say anecdotally, seeing a Model S on the road is most common with older model years as most of those buyers clearly switched over to the Model 3 or Y instead.
The type of buyer who is actually looking for a $90,000 luxury vehicle, that's the type of person I am saying the X and S are not competitive with, which is why they're being discontinued.
Someone spending that much in 2016 on an S or X was getting a vehicle that was bleeding edge technology you couldn't get anywhere else.
Someone spending that much in 2026 will choose the extra luxury features, build quality, and brand prestige of something like a Porsche, Audi, BMW, Mercedes, or Lucid.
Sources:
https://insideevs.com/news/746147/kia-ev-sales-record-2024-u...
https://ir.tesla.com/press-release/tesla-fourth-quarter-2024...