The people who buy iPad , buy it because they have time to screw around (watching movies, reading books, browsing the Web, scanning email and Twitter, looking at photos, and playing games).
These people have enough money and want to spend that money on quality content in style.Now you might be able to get cheap tablets in the hands of people. But does that solves any problems?
Depends on who you are :-
If you are amazon :- You don't care about the experience people have on your device. As long as they are willing to buy stuff from Amazon Store. But would they buy stuff from amazon?? Sure but remember they are the people who like cheap stuff so you are practically fighting the price battle all along, even if you somehow bring them to the store.
If you are Google :- You again don't care about the experience people have on your device. As long as you use it, so that Google can know about you and thus try and sell you stuff. Sure but remember they are the people who like cheap stuff so you are practically fighting the price battle all along, even if you somehow are able to pitch them the right advertising.
So why apple iPad seems to be the OOC (Only Obvious Choice).
From the get go, the people who buy iPad have made it clear , we love quality products and we have money to by it. So Google and Amazon you are both great companies, We love Googling and Buying Online and will continue to do that wherever you are, unless you screw it up for us.
So does that mean there is no iPad killer and it's dominance will never fade.
Sure it can - If we get companies/people who really care about it. Not care about it as an after thought.