So, there was a time when the percentage of book sales done online was going higher every year, and so was the percentage of book sales which were e-books. The

So, there was a time when the percentage of book sales done online was going higher every year, and so was the percentage of book sales which were e-books. Then, about a decade ago, the rise stopped, well short of 50%. e-books are at about 20% and actually slightly declining last I looked. The decline in vinyl record sales also comes to mind. It actually ended in 2006, and vinyl record sales in 2020 were the highest in decades: https://en.wikipedia.org/wiki/Vinyl_revival#In_the_United_States https://en.wikipedia.org/wiki/Vinyl_revival#In_the_United_St... Just because a trend is going upwards, doesn't mean it will keep going that way. Sometimes, as with for example the displacement of steam power by electricity, it does go pretty nearly to completion, but plenty of other times it does not.