Ah, it's the "Don't upset corporations or they will punish us with infinite price hikes" mantra.

If they raise the price by €1 and for the sake of argument we assume a net profit of 50%, they would have to sell 1.1 billion packages to recoup the fine (I don't think Microsoft has sold that many software products in their lifetime, but it's a fun little thought experiment). 1.1 billion Windows 8 licences at €280 a piece is €308 billion revenue of which the corporation taxes will flow back to the EU members. It's a win-win for our tax payers!