Wouldn't argue your personal preferences :)
I would argue that there's not a lot of cross-market shopping between Tesla Model 3s and most of the luxury brands. I might eat my words - if the Model 3 is fully decked out with traditional luxury (in additional to all the tech), and the interior style is fully competitive, it could happen. I don't think that's the case. The Model 3 is intended, in my opinion, to "get by" and compete with other mainstream cars (appliances, really) like the Accord and Camry. But there will be future cars, maybe from Tesla, maybe not, that eat into the luxury brands to a much greater degree.
My wife drives a BMW 3-series.
She can't wait to dump it and buy a new Tesla Model 3. We test drove the Model S last year, and LOVED IT, except that it was too BIG. It's light years ahead of traditional gas guzzlers.
She just wanted a Tesla that is similar in size to her BMW 3-series. The Model 3 looks like the perfect answer. She would have put down $1,000 to reserve one if I hadn't told her to wait (her Beemer is still running great, so no reason to get crazy and "get in line" now). I wonder how many reservations Tesla would have if it weren't for "cautious" folks like myself?
It's not about how much faux-wood paneling the car has, she wants the more modern, high tech, environmentally friendly car. The acceleration of the Tesla makes her competent, but unspectacular BMW 3-series look like a Yugo by comparison.
BMW just can't compete with Tesla there. At least now now. Maybe they will catch up at some point.
Hell, I don't even like Sedans, I drive a big old ugly gas guzzling truck, and even I'm considering buying a Tesla. It's just that much fun to drive.
Did I mention that HOLY SHIT, the TESLA IS FUN TO DRIVE? Freakin' thing takes off like a rocket (and this was NOT the high end P90D rocket car that we test drove, just the "regular" version of the Tesla Model S).