Same goes for everything else. Why should games be different?
I agree, it's like saying buying a second hand laptop (say a Macbook or a Dell etc) but you have to pay the manufacturer £100 to enable to network card.
I can kind of see EA's stand point though, and I dislike the GAME/Gamestation business model with regards to pre-owned sales. I think how EA see it is that the product is not actually the box/disc/manual but more the content of the disc, so in order to properly access the content on the disc you must pay a fee, I'm still undecided though as to whether that is right or moral.