In the U.S. I think all of this will ultimately be settled by the courts.
http://news.cnet.com/8301-17938_105-20012354-1.html
http://seekingalpha.com/article/2087...e-ebook-market
http://gizmodo.com/5602646/ct-attorn...-ebook-pricing
Obviously I am not talking about the bad ebook ratings at Amazon. I am not even talking about Amazon.com nor Apple (though the journalists tend to put those two company's names in their article's heading). I am talking about the State Attorney Generals will do a bit of investigation and then their focus will shift onto the Agency 5.
So far in the U.S. we have Texas and Connecticut, I would be willing to bet New York joins in at some point in the next six months.