It's specced the way it is to deliver the best in class, best possible content experience without compromises in initially small volumes. Neither of those things is an accident. Scaling up manufacturing is hard and expensive. Much easier to create a lot of hype for an expensive device that is going to be so popular that they won't be able to satisfy demand. So, they'll make lots of them and sell out in no time. The ebay value of these things is going to be insane.
By the way, this is a similar price point to the magic leap and holo lens devices. This just seems to be what it takes for a state of the art AR/MR experience.
And it's not like there is a shortage of very wealthy people buying things like Teslas, ipad pros, fully specced out iphones, that carry thousands of dollars worth of equipment. For those people 3500$ is just the right level of premium and exclusivity. Like it or not, Apple is very good at separating people like that from their cash. There are millions of them and most of them are already loyal customers. There is no need for a lower price point and there absolutely is no need to compromise on quality.
The goal isn't to make you happy but to make you crave something you can't afford yet. So, when the time comes you'll be spending a bit more than is comfortable for you. That's what Apple does. They leave the low margin scraps to others.