I'm guessing the cost difference is greater than this. Which means the end-user price difference would be north of $1k.
Would be interesting to see if customers would pay $2 to 5k extra for a mostly-tactile interior. (I think back-up camera requirements make some screen unavoidable.)
While I was not presented with the option on a given model to go with buttons or touchscreens, when I was shopping for cars, I did eliminate models based on their interface options. The models I was willing to consider were probably cut in half because I wouldn't get anything that was entirely touch screen or capacitive for both AC and media.
That being said, the touchscreen software is abysmal and laggy. CarPlay works great, but any time I have to navigate the car's built-in software is a headache.
At that point though they might as well be physical buttons! It's all the disadvantages of a touch screen and none of the advantages.
It also irritates me that there are 3 of those blank button placeholders on the dash and I wish they were actual buttons that were just mapped to A/C and recirc...