yeah, i was totally prepared to pay for L4D dlc, those campaigns are way too long to be free content
also, on PC they're getting ready to release developer tools, and there'll probably be no shortage of custom campaigns
i have no problem with L4D 2 at all, although i hope they find a way to integrate the two games so you won't have to back out of one to play the other
pc gamers still get plenty of free content from developers - all the COD map packs are free on PC, for instance