Tesla is trying this model, but I don't know whether anyone can makes claims as to its success yet. Right now they're pretty low volume and are losing lots of money. Maybe the no dealer model scales, maybe it doesn't.
For comparison Acura only sold 167,843 units in 2014 and they have some models for ~10,000$ less.* And they have an extensive dealer network. Honda their parent brand sells well under 2 million cars a year and is a major automaker.
*List price on a new ILX is 27,990 but this assumes people are paying sticker price.
Besides, those pre-orders are refundable $1K deposits, not someone who has put down $30K right now for delivery 2 years hence.
Having Tesla front-run a lot of this stuff is pretty smart if they are intending to go that route though.
My '69 Chevelle disagrees.