Open-ness get abused by marketers but the fact is it's a value-add trait and one on which Apple built their entire iPhone business, by taking control of app sales and installation away from the telecoms welcoming aps from all comers.
Products don't have to be open to all comers to be successful as many closed systems can be and are successful.
The fact that some people may have a greater tolerance for its absence does not negate the underlying reality that more open is better than less for customers.
In ebook terms; I "suspect" that we would have a hard time finding somebody willingly inflicting a upon themselves a truly closed ebook reader like, say, the Sony Librie 1.0.
But maybe that's just me...
