Reading and books have changed in the genres that I read. I read books and e-books. When I was younger I read more juvenile books. As I got older that switched to adult fiction in 5th or 6th grade. I still read juvenile books, but I read more adult fiction. Now I mainly read adult fiction and young adult fiction. I used to read a little more non-fiction, but I don't much at all these days. E-books weren't around when I was growing up. So other than e-books becoming an option, and my taste in books changing a little books and reading haven't changed that much for me over the years. I still read more physical books, than e-books because I prefer to hold the book in my hand. But e-books have made it easier for me to find different titles that I want to read. It is also quicker to get a book, because I can decide I want to read something and download it to my device in minutes.
I see books becoming easier to self publish; but publishers will always be around because some people will always prefer holding a book. Books will be easier to find through e-books, so printing might become more limited, but not anytime soon. I think books will stay much the same with different genres and writing styles appearing, but I don't see books themselves changing.
I think people will still find time to read. It is a relaxing activity so people will always make time for what they enjoy. Books can become more interactive through the internet and e-devices. I have seen authors make up websites that show the characters, maps of towns in books, and interactive activities that go along with stories. I think that will only expand as time goes on.
Publishing may become a smaller business, but we will always want choices and options. So I don't see publishing go anywhere in the next 20 or 30 years. Maybe in the far future there might come a time when people stop with actual books, but not any time soon. There are too many people who don't have access to electronic devices for paper books to disappear any time soon. Books should always play a role. Books are important in knowing the size of the book, seeing the print, looking at the cover, flipping through the pages, and just enjoying reading a book.