I see percentages of around 20% for the Model 3 claimed by different articles, such as this one:
https://www.teslarati.com/tesla-made...rgin-cash-cow/
Even if that is averaged over models (ie, higher on the higher end models, less on the lower end models), still not sure how that is so bad, as many companies are structured that way with their products and do quite well. Not sure why Tesla cannot be successful with this approach.
And not just with their cars, but probably also their energy storage products and solar roofing. Time will tell.