2018 was also the first time in five years that overall revenues fell – 2018 was still better than 2014 and 2015. The idea that we should scuttle the entire publishing industry and switch to Spotify because of these minor fluctuations from year to year prove the "business model is dying" is absolutely cockamamie. "Legacy publishing" continues to support the production of great work – that is what counts. (It is also my livelihood as an author, so yes I'm biased.) I shudder at the alternative – say Kindle Unlimited, the closest thing that's been tried to a streaming model, which has worked well for romance novelists and romance readers and pretty much nobody else.
fwiwi, I'm continiously buying relatively expensive printed books, mostly technical. I think I will continue doing so, at least as long as I can oder printed copies.
Paper copies have a few important advantages. They do not distract me. Do not run out of battery, and I can use visual and physical clues for finding topics, see my progress, make notes, etc.
Five years of using Kindle, proved that even a dedicated e-reader in no ways can provide a similar experience. So, at least for a niche printed copies would be a thing for quite some time.