The way I grew up (no ebooks): Books had a beginning and an end. When you were done with a book, you had to get a new one (buy/borrow). You had to contextualise and sync into a new book.
Alot of computer games are neverending. For example: You can allways play another RTS skirmish. When I sink into a new book, I can cut myself off for days. But it only happens ocasionally, because once the book is over, so is my compulsion to read it.
It's like comparing a movie to a series to a soap/reality/cable news.
You will not spend alot of time watching movies. The narattive usually ends after several hours.
You *can* spend alot of time binging a show.
You most definitely will spend too much time watching a soap-opera a reality show or the daily news. In fact, they are designed with exactly that goal in mind. Many countries have a dedicated 24hr "big brother" stream which constantly broadcasts the show's participants to encourage you to never stop watching.
I guess what I'm trying to say, is that TV and Video games are in another league of addictiveness. Books are not addictive enough to become a big problem for most people. However games, and facebook are. And a large percentage of the people I know (I hesitate to say "most") are addicted to TV. The one thing games have "going" for them is that they are still less popular than TV": An older parent is much more likely to encourage and participate in a TV addiction with their children than a computer game. ex: eating dinner regularly in front of a TV.
I don't think people realise how much time,experiences, and personal development they lose to electronic media. I don't think the size of the problem is remotely comparable to books. I know many people in my environment who spend several hours daily watching reality shows and cable news and play computer games. I know very few people who read a book a week [although I know some :-) ]. Also parents tend to sit their *toddlers* in front of a TV to keep them quiet. Which sends a very bad subliminal message such as: "You should be watching TV, because that is what people do at home". It creates an impulse at an early age for a developing child to enter the house and hook up to a screen. It also kills any conversation/talking that the members of the household might initiate. am afraid that computer games have a similar effect.
At least they are not very accessible to toddlers yet. Although mobile interfaces are changing this drastically. You don't need to sit a table enjoy a touch screen game. I have seen many two year olds happily tapping away for hours on their parents' phones. One of these times was on a camping trip. I don't think the child was even aware that there was a happy campfire meeting around them. It makes me sad...
One sign of addiction is remorse: How often have you read a book over the weekend and said to yourself: "What a total waste of time, I should have gone to that party, got some work done, or attended that family meeting". While this has occasionally happened to me with books, It happens to me much more frequently with electronic media. I would say at least once a month.