CT will likely sell primarily to people who don't want/need a truck but are buying it for novelty and have money to spend.
I think Elon made a mistake with this one (and has even alluded to that). Pursuing CT over the $25k was a bad idea that might set Tesla back some years.
Yeah, it's pretty clear in interviews and such he realizes the CyberTruck will be extremely lucky to break even. Just not a good move.
Every other car company sells far more models than the 4 Tesla sells.
Tbh most car companies actually design and release bugger all. Toyota for example have run basically the same model vehicles for like 20+ years. With each year just modifying the last iteration. They rarely develop more than one vehicle at once from the ground up.
Volkswagen Group develops a lot of different car models. Sure, they are using the same platforms across subbrands, but the subbrands compete with each other within the VW Group.
[1] I don't have an exact reference, but this was explained in one of the earning calls after they started cutting prices at the start of this year.