They aren't mainstream buyers any longer then, or if you'd rather - they've become what will be deemed the *new* mainstream buyer if and when it's more common place in America to buy your car direct from the manufacturer instead of through the antiquated dealership venue. You, Tesla (and world events?) have changed them, which goes back to a point I've made a number of times over the last several months to those who believe Tesla has to change and become more 'big three'-like to succeed with the Model 3 - the consumer will change with the times as they always have, particularly when the product is compelling. Consumers, even 'mainstream' ones, are no more static than Tesla vehicle features.