Do you think that companies such as aurender or innous or 432 Evo could succesfully sell and market an entire line of servers if there was no sonic improvement between models which are more expensive from one another?
Yes, It’s called expectation bias. The same phenomenon that largely drives the high end cable market. That and listeners neglecting to level-match when conducting comparisons.
Then there are those who simply buy the most expensive gear they can afford from the outset. It’s not like Tom Cruise is going to start off with a Chromecast and incrementally upgrade. If you’re the type that buys into Sci******gy, you’re very likely to buy into high-end streamers.