I really think the publishers need to get with the program here and understand that the goal should be to make it as easy as possible for customers to get and read the content. So they need to end geographical restrictions and DRM. I can't think of any business that has ever thrived from turning away customers with money in hand.
As for me, I do not file share but I do remove DRM and I see nothing wrong with it. I just want to be able to read it on my Sony. So for me to pay money for the ebook and read it myself on my Sony, even if that means stripping the DRM, I really do not see how that costs anybody a sale they otherwise would have had or hurts the author in any way. If there is some sort of crackdown where I can NOT remove the DRM, it will mean I cannot read the book on my device, I would therefore not buy it and the author would lose out on that sale. Of course, it would be easier if they would just sell me a usable file and not make me go to this effort
But until then, I am willing to make the effort myself and if they ever try and stop me, it will mean less money for them since I will not buy books I cannot use.