Gema is really nuts. I don't understand who lobbies for them, but instead of producing music that people like to buy, they rely more and more on taxes. Even back in the 70s they managed to put an extra tax on tape cassettes, because you could copy vinyl on them. Back then, this might have been the most likely usage for cassettes. But for CDs and USB sticks this is a rip-off.
There is one more nutty thing that falls into the same category. From January 2012 on, every german household has to pay for public TV, even if the household does not have a TV set. The reason is, that you can receive TV programs via internet and thus also a computer is a TV (well - ...).
So also the TV stations, by simply broadcasting their stuff for free in the internet, managed to get an extra tax. Although, there is no medium like the internet where it is easier to make users log in and let them pay exactly for what they use.
(Note: I indeed never owned a tv set. I indeed watch the daily news on my computer and I'd be happy to pay for this. But only for the news, not for the remaining crap).