[fjtorres]

General answer:
No, dedicated ebook reader devices are not for everyone.

First, you need to be a regular reader; even the cheapest reader is not worth buying if all you read are three-four books a year. Or less. And that is a lot of people.

Second, you need to either own or have access to a PC, a WiFi router or hotspot, or have a relative who will load the books for you upon request; siblings or descendants most likely. (Failing all the above, you would have to be comfortable with the idea of a Kindle 3G-based reader.) Current PC and Internet-access penetration in the US runs at about 75% of households so right there you have a 25% share to whom non-3G readers will require some contortions to use regulary.

Third, your reading should be directed mostly towards narrative text; dedicated readers are optimized for recreational reading so they are less than perfect for academic, technical, or corporate publications. If your idea of an ebook is a pdf file, odds are a dedicated reader will not be a satisfactory reading experience.

Fourth, your preferred reading material should either be out-of-copyright material (a fair amount) or relatively recent (a lot, actually) or availabilty will be hit or miss. Genre fiction in the SF, Fantasy, Romance, and Young Adult categories is more likely to be available than others. With history, biography, self-help and current affairs books availability of recent content will be good but the backlist will be sparse for most books older than 3 years or so. Backlist availability is steadiy improving but some authors are luddites or digital paranoids and will refuse to make their books available as digital editions until they have no other choice.

Fifth, some people are interested in books as collectibles and/or objects d'art, or they are leather or smell fetishists, so no ebook reader will every satisfy their needs.

Add it all up and even in the most developed ebook market, the US, there will likely be a substantial plurality, maybe even a *majority* of the populace for whom a dedicated ebook reader will never make much sense.

Indeed, odds are the adoption of current-tech ebook readers in the US will plateau some time in the next 18 months or so.

So, no, ebook readers are not for everyone or even most people.
But those that can take avantage of what they offer will find a lot of value in them.