Why is Hi-Fi so expensive?

Could you please elaborate on the reasons behind the high cost of Hi-Fi systems? Is it simply due to the superior quality of sound they produce, or are there other factors at play, such as the use of premium materials or intricate manufacturing processes? Additionally, do Hi-Fi enthusiasts tend to pay a premium for the brand name and prestige associated with certain manufacturers? Lastly, how does the cost of Hi-Fi systems compare to other audio equipment, and is the price tag justified by the performance and durability they offer?