I'm sure some of that happens. But generationally (and what's happened with vinyl notwithstanding) I have to believe that large bulging bookshelves in homes will become less common than in the past. Especially to the degree that more people may be inclined to live in smaller urban apartments.

My personal bookshelf is tiny and evershrinking. But you never know--maybe books will pull a vinyl.

But I think I'd still sell ebooks if I offered them, given the number of requests I've had. (They're programming books and those don't lend themselves well to ebooks.)

Certainly. "How to" books generically I tend to prefer as physical books. I'll buy a super-discounted cookbook now and then if it looks interesting but I much prefer physical cookbooks in general. Same for home repair, etc.--though a lot of that is YouTube these days.

I'm slowly depopulating my house of books I almost certainly won't open again by taking a couple bags to my town library for their annual book sale--and am absolutely not adding any new bookshelves.