Yeah, but there is a difference between demand and production. The former does not translate to the latter without significant investments. S and X is the best way to get resources to do them.
That's true ! But, I would submit that it's more than just investments or resources.
I think experience with the production line, the sourcing of parts, the integration of all of that, the production and processes, quality and process control and the huge amount of iterative learning in all areas...from design on down...which cannot be done in 2-3 years...and requires many years..is all part of that. This is tough to do with high volumes.
I used to to drive mustangs and Toyota celicas in my 20's and then moved to Infinity ( 2 of them bought the same day ) in my early 30's and it was easy to tell how difficult it was to go from a mass manufacturer to an upscale, high quality manufacturer.
Then I moved to all MBenz's for the past 20 years and have been largely happy ( except when they bought Chrysler which was a monumental mistake ).
I think Tesla and Elon have followed the optimal strategy with low volumes before moving to high volumes...simply because that is the easiest and least risky strategy for an innovative technology company.
Essentially, the Model S and Model X owners will pay part of the cost for the Model 3 owners...just like the Mercedes S class and BMW 7 series owners fund part of the investment and technology costs for the BMW 1 and 3 series owners, and S class owners for the Mercedes C class owners.
All I am waiting for is Tesla to get over all the iterative learning and fine tuning and production processes and upscale quality control, because I have very little tolerance for any problems with my cars. I always sell or trade my MB's within 4 years .....and have never ever been stranded ever with a Mercedes.
I hope to move to a Teslas soon and never look back....because Mercedes innovations over the past 20 years have been very, very slow and very, very minor...mostly form, styling etc. They even got rid of the power assist closing doors on the S class that they had in the early 90's ....because of quality issues. Thankfully, I had it covered for a full replacement .....but the steering, turning radius, acceleration and traction control have all been great....