I have no real opinion on whether this is good or bad although I am guess that some of the technology that is developed for these stratospheric products filters down to real world products. My interest is in the factors that have facilitated the growth in this market, not least the creation of a significant cohort of ultra rich as a result of widening inequalities in income and wealth. I would argue that this cohort was too small in past decades to support an industry where some hifi systems cost as much as a small house!
Geoff