And what about those who can't go online because their connection died (lines down, modem died and can't get a new one for a while, etc.), or their connection got dropped unexpectedly in the middle of play (which I'm sure will have some affect)? Seems like a shit deal then.
And really, it doesn't matter. A hack will come out that'll allow you play offline, and that'll be the end of that. I personally don't care about the proposed marketplace, as I'm never going to pay for someone else's weapon that was made/found in-game, and anyone who would... well, I question their intelligence. If someone made/found it, that means you can too. So find it your-damn-self people!