Okay great, but now the lowest cost of the car is an extra $10k because the manufacturing just got a lot more complicated as a result of not being able to build every car the same way.
This is naive. Tesla isn't selling the base model below cost. If they did, then Tesla would be wiped out unless people shelled out for the extras, because they'd be losing money on every car sold.
Instead, what's happening is that the current price fully reflects the cost of production, and holding the extras hostage is pure gravy.
Then customers have the choice to purchase a vehicle from a manufacturer with more scruples who is willing to sell those features without charging to "unlock" them.