Earlier quoted context omitted.
I was being hyperbolic in that question, to be sure. It's probably better asked as: When will the publishing industry finally accept that it exists in a world where counting copies made doesn't work as a business model anymore? Technology isn't going away. The business models will have to change. Some businesses will fail. Some creators will have tragic outcomes. Some works will never be created. Entire classes of wo…
In the UK, revenue from ebook sales grew 3% between 2018 and 2019. Where is your evidence that the business model of "counting copies" – i.e. selling books to people who want to read them – doesn't work any more?
The 3% increase in ebook licensing revenue from 2018 to 2019 was an absolutely increase of ~20 million pounds. That doesn't absorb event a quarter of the decrease in print sales. Given the relative price parity between the two, I'd say that people who aren't purchasing print books aren't licensing ebooks, by and large, either.
Unless the book publishing industry can come up with some analog to subscription streaming services, or can use their lobby to kill general purpose computing devices, I don't think the long game looks very good for their business model. Video and audio media are well suited to the streaming market because there's enough inconvenience in making infringing copies to make paying license feeds worthwhile (at least, with current media file sizes and network speeds).
I don't think ebooks have as strong a value proposition for paying the license fee vs. making an infringing copy.