I don't think the opportunity really existed for Tesla to build a $15,000 super truck. Even a massive, cash-rich company like GM could only do so much with subsidizing expensive components, though surely they can do so in a more appealing package than the Bolt.
Tesla is not trying to build a truck for everyone in my opinion.
This truck will be a status symbol. Yes, trucks as they are now can and will be used as a status symbol, but it's slightly more complex than just buying a truck. You have to be giving off certain messages. That the truck is actually capable. The stickers on the side talk mention 4WD and the special suspension. The badges prove you got a fancy, luxurious trim level.
But I know plenty of people that buy a truck to get things done. Ironically, the most work-focused don't care about double/crew cab unless they've either got a big family and have no choice, or they use their truck to haul a bunch of people to a job. But real work trucks are often regular cab with a big bed or a specialty cargo area. Work trucks are often 3/4th ton or full-ton. Yes, a few people buy those for status symbols, too, and others because the work they'll do will actually require the capabilities and durability of a beefier suspension.
But there's something important and subtle in what I've said so far. Trucks have to conform to the buyer. Configurations vary between RWD and 4WD. (This one Tesla got mostly right. I say mostly because AWD is not the same as 4WD. It can absolutely be better in a variety of situations, but not necessarily all, and some buyers will just want 4WD.) Suspensions vary all over the place. In your status symbol, it should be compliant. In your 3/4th ton, it should be massively strong and support a ton of weight. For some, it should be off-road capable. It's possible that the default suspension of the Cybertruck will adapt to all of these scenarios, but I'm dubious. Seating doesn't always have to be 6! Now, I know, the market has pretty much spoken on this. It's getting harder to buy a 2-door, 8-foot bed pickup truck these days! But there are those who want it, especially for rentals and real work. Then, beyond all that, people want to customize their truck so it's really theirs. It doesn't seem like there's much to differentiate the trucks. Will the AWD ones get stickers or anything more obvious than a small trim badge on the corner?
While full-size trucks sell best, the Tacoma (it's not small but it's smaller), is a popular option for many, too. From the original post, this is the closest to an "affordable", useful truck, though of course it also tends to be sold with four doors and a tiny truck bed. Still, there's a market for a smaller, more efficient truck. Tesla is unlikely to build this one, given how they picture trucks (based on the Cybertruck.)
If I have a point, it's that it's not up to Tesla any more. They have a goal with the Cybertruck, but it's not to sell millions of trucks. It's to change our minds a little about what trucks can be, and then let the market fill in these new itches we have to scratch. It's up to Ford and GM, and if they ever get on board, Toyota and RAM and Nissan. (Nissan seems like a pretty good candidate to make a small, affordable electric truck!)