The march of technology forwards also seems to have a lot of steps where things get made cheaper.
There will always be cheaper and more expensive products... it’s all based on technology and the technology always moves forward although certainly the more useful older technologies will stick around and perhaps be improved as well. Like record players and tube amps. But the big advances will leave older technologies in their wake at various price points over time. Like Class D amps and digital streaming. Its all good, some newer, some older, some cheaper, some more costly. But never static...always changing....