>> For instance, pricey CDs prevented lots of people from listening to music.

Nope. Nobody I knew in the 90s had this issue. In fact, higher prices caused more people to listen to more music. Unable to afford CDs, the kids turned to Napster. After that they had access to more music than any generation in history. This in turn forced the music industry to change, to create online delivery platforms. Napster might be gone, but those 90s CD prices are why we have streaming services today.