How can legacy auto refresh models every two years and Tesla cannot?
You wouldn't mistake Mercedes S-Class for E-class and E-class for C-class. Even BMW 7 vs. 5 vs. 3 look more distinct than Tesla S vs. 3 and X vs. Y. The Mercedes and BMW do the good job of market differentiation while in my view Tesla failed here, and thus cheaper 3 and Y cannibalized sales of S and X. Thus, paradoxically, given that Tesla started in luxury segment, Tesla hasn't recently been capturing that high margin of the luxury segment (which is doing very well overall - just look at those Maybach and AMG numbers)