Hardware Piracy No Surprise
With the already high US$ prices for some software, the increasingly 'rip off' European prices just invite attention, and the attention that they get is that of piracy. A quick scan of ebay at weekends shows that you can purchase fully working copies of most software for literally a few £ or $. Whilst I do not subscribe to software piracy, the opportunity to save several 1000% is tempting to many.
Of course the high prices do not justify piracy, nor are they the only cause, but they are a reason why many people, otherwise honest and law abiding people, may choose to buy a copy of adobe at around £10 from ebay, rather than pay the additional markup several hundred pounds for a UK version that is in American (color !!) English anyway.