They should have the option, sure.
But what difference do you think this makes in reality? The process ends up being the similar.
>but I admire the business model of buying directly from Tesla
A lot of people don't want to buy a $40,000+ item online. Tesla understands this, which is why they opened "showrooms" to have real people walk you through the process.
Oh, and let's not get started on surprise repair costs from Tesla, as if they are immune to that ridiculousness.
Saying "no stealerships" (so clever) doesn't change the fact that there's a manual process involved with buying a car.