This is not a blind spot, it's explicitly part of their company's long-term strategy; Musk's plan from the beginning was to start with a luxury-tier offering (Roadster), and gradually work their way down the price-points as they achieved greater economies of scale.
Musk wrote about this way back in the day (2006):
https://www.tesla.com/blog/secret-tesla-motors-master-plan-j...
> Almost any new technology initially has high unit cost before it can be optimized and this is no less true for electric cars. The strategy of Tesla is to enter at the high end of the market, where customers are prepared to pay a premium, and then drive down market as fast as possible to higher unit volume and lower prices with each successive model.
You might criticize their execution for failing to reach the mass-market sedan price-point fast enough (though I think that they have done an impressive job of starting a car company from scratch), but I don't think the "blind spot" claim really holds water.