In my opinion, everything is getting more expensive nowadays without audio discernible improvements and the public isn't doing enough to stop this trend.
I think that for speakers especially there should be more initiative, otherwise even the budget manufacturers will increase the prices up, just as these expensive manufacturers:
https://www.theabsolutesound.com/articles/dynaudio-confidence-20-loudspeaker/ - 13000$/pair
Imagine the impact of multiple blind-tests using a 300-500$ bookshelf speakers and some EQ to match the sound of the Dynaudio and not being able to distinguish them or getting a difference that doesn't justify the extra money.
For amplifiers and DACs the blind test comparison should be easier since they're supposed to color the sound less than speakers.
Bookshelf speaker that cost 500$ a pair, with a total of four drivers, will have drivers that cost 10-20$ per driver. Do you honestly think this is as good as it gets?
As a manufacturer I can share (as others have in the thread) that cost for a manufacturer has increased dramatically as well. And do you really want Europe and the US to stop manufacturing and production alltogether? Would you prefer everything was made in China?
Finally, a 500$ speaker and a 13,000$ speaker does not have the same target audience. If you are in the market for a 500$ speaker, it is very natural that you do not find a 13,000$ speaker to be a good value proposition. That is all well and fine. We are lucky that there are decent products in many different price brackets, so everyone can find something to suit their needs and budgets.
If you want to evaluate if the Dynaudio is a good product, it should be compared to other 13,000$ speakers, not a 500$ speaker.