Amazon may try to play a game of lifetime value of a Kindle owner and subsidize based on that. I'm hesitant to think that will work because if the price point drops to $0 to the consumer then Amazon will attract customers who will have lower lifetime value and thus end up costing Amazon the difference between their lifetime value and the cost of the Kindle.
Most books are disposable to me: a tech book that is obsolete in a year, novels that are not worth rereading, a popular career or business book I read for context. $10/book is a little too much for something I'm only going to read once.
Someone once told me that if you can get _1_ idea from a book that changes you're outlook on things; then it's worth it, and I agree. I don't understand how people can say $10 on a book is too much; you can friggin' spend more than that on one meal!
EDIT: And as eru said, if you still think its too much, join a library.
I am doing no such thing. Sure, some of my purchase price will go back to the author and in aggregate with other purchasers they may be fairly repaid for their labours. But the book is worth whatever I was prepared to pay for it.
What you proposed was the Labour Theory of Value; a thing is worth the effort and talent put into it. Intuitively attractive, but it breaks down in economic practice. If instead you accept that things are worth what people will give up for them -- the Subjective Theory of Value -- economic analysis requires fewer epicycles and illuminates more phenomena.
I've spent > $100 on ebooks or courses, and they've been immensely helpful. I guess it depends on how much you're willing to pay for the value you get.
If you are reading for entertainment and a $10 book that 4 hours to read, that is only $2.50\hour. Seems like good value.
If it isn't for entertainment and you aren't deriving (syay) $10\hour of value out of it, then why are you doing it?
Nintendo has never subsidized hardware sales, they have always made a profit on their consoles and hand-helds. The XBox 360 console is now turning a slight profit on hardware alone due to cost reductions over time (though the Kinect is subsidized). I don't know about the costs of the PS3 but it's certainly far less subsidized than it was at launch.
Unless you're Amazon, Apple, Facebook, Google, etc. and want to be THE platform and have all subscriptions go through you and onto your awesome device. Apple's iOS AppStore is very successful example of this.
[1] Possibly apocryphal, but probably true enough: http://www.humorwriters.org/startlingstats.html
If, however, we end up having a bunch of different readers each one locked into its own walled garden, I'm out.
http://calibre-ebook.com/user_manual/faq.html#what-formats-d...
(At least, that's my reason for not getting a Kindle)