From at least the late 90s to recently you were consistently getting more for less with hardware. Things were expensive as they came out, but then got cheaper than the previous alternative. The market moved from a school having a couple of slow computers to everyone having multiple supercomputers. Not only did they become faster but you could do more things with them. These days many things seem to be getting slightly better, but more premium and almost less capable. Upgrading a couple of year old smart phone or computer today isn't exactly a mind blowing experience.

"[...] formerly for the super-rich and making it accessible to the upper-middle class (eg: a private driver, a personal chef, custom-tailored clothing, custom paintings)"

Don't really buy it. Before it was only for the rich it was for everyone. You go to rural places that's how it works. The latest incarnation of modern society is, for better or worse, based on people having their own car, camera, kitchen and being able to buy the latest fashions.