Is it possible for a high end manufacturer to overprice their goods?

No - free market so they can price things however they want to.

Whether they make enough profit or not is another question that depends on many factors other than price alone.

As an example, Samsung, like most manufacturers, does not price televisions based on their internal parts, manufacturing, marketing, and shipping costs.  Many items, and particularly luxury items, are priced (at least in part) based on what the market will bear.  This should not come as a shock to this group given that audiophiles are being sold fuses for hundreds to thousands of dollars, and stuff like this ground-breaking game-changer for many thousands of dollars.

BTW, it appears Tweak Geek has taken down their QSA products.

"these people are not millionaires in any sense"

Uh, assuming their houses are mostly paid off, actually they are millionaires, based on the commonly used definition:

a person whose assets are worth one million dollars or more

More interesting information:

As of Apr 12, 2023, the average annual pay for the Millionaire jobs category in the United States is $76,071 a year, or approximately $36.57 an hour.

and,

The nearly 22 million Americans with a net worth of over $1,000,000, account for 8.8% of the country’s adult population and over 39% of millionaires worldwide. Feb 24, 2023

Of course, as you observed, being a millionaire based on assets is different from having a million dollars.

Why spend all this energy speculating and judging what others should be thinking or doing like some sort of social crusade?

Those manufacturers are likely making exactly the choices they want to make.  Anyone who doesn’t agree is free to spend their money elsewhere.  Pretty simple.

@kokakolia 

Success in the audio bizz seems to come from marketing, marketing, marketing... Just produce something decent and hype it to the max.

The marketing gold standard seems to be those companies that not only effectively market a product themselves, but also create such a buzz that the audiophile community carries the torch to the point where promotion of the product in audio forums and by word-of-mouth seems to take on a life of its own.  Orange fuse anyone?

Regarding furniture;

Or you can custom order a table, spend thousands and wait months.

The Fleetwood Rack System appears to be an awesome equipment rack that would look great in my room but, as cool as it is, I just can't convince myself to pay $$$$$ for something that probably doesn't function any better than my Sound Anchor stand.

Can speakers that are great at dynamics and drive also excel at detail and nuance?

Who is to judge?

With most products and services, if at least some people don't complain about the price then it is probably not high enough.   If it priced too high, then it won't sell.  The purpose of most businesses it to make money so the good ones price their goods/services based on "what the market will bear" for the value provided.  With a group that will pay $250 for a pink fuse, the sky's the limit!