You're comparing today to a totally different situation, when the model S was not only grabbing large luxury sedan buyers, but people who only wanted a small sedan or less expensive car but had no other choice if they wanted an EV. If you look at the multi-year trend of large luxury sedan sales I've attached (source: goodcarbadcar.net), the model S created an unmistakable bulge in total segment sales when it was introduced, and now it's back down. It was all the Prius / Accord / 3 series owners moving up into the segment to buy the only good EV on the market. Now all those folks have the Model 3, and Model S sales are back to where they "should" be (but still #1).
Refresh it all you want, add FUSC, etc., but those sales are never coming back, unless Tesla kills the Model 3. There's just not that many people willing to spend a premium for a car, or wanting such a large sedan. For those who do, Model S still dominates.
And no matter what Musk may have stated in public (though I don't recall him ever stating this), I can't believe he or anyone on his team were dumb enough to think Model S sales could have been sustained after the Model 3 came out. Not with the data they have showing what cars people had been trading in for the Model S. Same for Model 3 sales (and Model X) when the Y comes out BTW - there will be a significant drop as people won't have to cross-shop to a different category to get a decent EV. Anything else is just wishful thinking.
Word Cloud example above...
RT