Just because they comply with the law, it doesn't mean that they don't discriminate. They do not do it on their own volition. They would probably gladly sell every book to everyone but they are unwilling participants of obsolete and unjust system of regional rights.
In the e-book world it makes no sense to each country to get publishing rights. And neither for many old and rare paper books that are practically out of print and not yet converted into e-format. The market is simply too small for most countries. The copyright agreements are the actual problem and it should be reformed.
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