Clavis said:
WOTC can simply look at its book sales, and judge interest by those, but even that can be deceptive. If a book appeals to most of the hardcore gamers, but few of the casual gamers, is that book really a success? It could be a money-maker, but it does nothing to grow the market. Perhaps WOTC wants to sell simply to the hardcore gamers that it knows, and is choosing to ignore the casual gamers.
I would put forth that the 'casual gamer' isn't a very good customer to pursue and support if he can't be turned into a 'hardcore' gamer. Right now, he's probably not giving you any money
anyway. Your casual gamer might buy a Player's Handbook if it's convenient but he's not going to GM, ever, so something like 75% or more of the books aren't something he's ever going to be interested it to begin with. The rest of the player-oriented material he'll borrow from his friends or tell the GM 'here's what I want, find me a PrC that does that'.
Actually I'll strike that:
every book other than the PHB is useless to the casual gamer; for all but one of the regulars at my gaming table, one PHB an edition is all the money WoTC will ever see out of them, and two of them don't even own that. Two of them are dedicated players who will change plans to play, but as far as customers they might as well not even exist. If a new edition drives them out of the hobby for good, WoTC hasn't lost anything. If they were going to turn into hardcore gamers they'd have done it a long time ago.
I'd think that the specific rules, look and feel, etc aren't going to matter to him very much - he'll play as long as his friends are playing or something else better or more pressing doesn't come along. So, an edition change isn't a blip on his radar and I doubt he cares very much. He's going to cycle out of the hobby in a couple years even if everything stayed the same, so really who gives a tinker's damn what he thinks? He'll be replaced by another casual gamer who, perhaps, will be turned into a hardcore gamer by the new edition and it's changes.