Originally Posted by nobicus
In fact already purchasing from Baen (who do sell in Sony format anyway).
Which according to the definition you cut and pasted means they're not a "coercive monopoly". Crisis averted!
If the device were restricted in such a way that you could not do this then you might have a case. But it's not. The library program only allows you to buy books from a single store, but it does not prohibit you form importing and reading books purchased elsewhere. There is no monopoly of any kind here.
The reason we can't use the Sony US store is simply due to publishing rights. It's one of the reasons Sony has got the jump on Amazon in Europe. As they're in a position where they can choose to partner with local companies who can sort out the rights themselves.