I'm glad for all the info.
I would also like to point out a consumer reaction that WotC may not have thought about, and has only really been touched apon in any of the threads I've read on the topic.
Now, I've pretty much hopped on the Paizo bandwagon, not being really excited about some of the changes in 4th ed. I figured at best I would play it at my local gamestore a few times due to peer pressure, but that's about it. Since new WotC material won't be comming out for my prefered method of gaming, I also had some future plans to delve into some other games I haven't really focused on (most likely True20 and Iron Heros).
As a gamer for 20 years, I'm pretty much as much of a book collector as I am anything...lets face it, gamers love their library. I also buy a fair amount of material that isn't directly related to 3.5 but still filters money back to WotC. I have more than a few stacks of MtG cards, I probably buy about 5-8 novels a year with the D&D logo on the front of them, several fistfuls of mini's, and even some goofier products like three dragon ante. Hell I bought the Star Wars books mainly for the art, and was pretty much planning on buying a few 4th ed books for the art and to steal a few neat ideas for my campaign.
All and all, WotC probably loves people like me, or did up until now...because at heart I'm a gamer and gamer first before a novel-fan, MtG player, mini-collector, or what have you. If I plan on playing True20, and after the first session none of my players can get the books because they are now arbitrarily out of print because WotC wants to remove that competitive product from the market via their new GSL, well they become a company that I don't like. If my buddy tells me about a Necro-game that he DM'ed that was fantastic but too bad it's out of print because Necromancer games signed the GSL from WotC to stay in business, well once again WotC becomes a company that I don't like very much.
You may find this strange, but I don't typically buy products of a company I don't like. I am not only a rollplayer but a collector of mini's, novels, cards, and other silly products and have been for 2 decades...and I am hardly an anomaly, am I? Even though I'm not a big fan of the 4th Ed change, that change never made me consider to stop purchasing products from WotC...hell probably more than a few of the 4th ed books, even though I don't plan to play it just for the art and a few game ideas. I think that changes now.
I don't really have to be empathetic to WotC's plans on this matter...well because I'm a consumer and justification of this act really isn't much of a necessity to me in comparison to having access to the games I want to play.
WotC may want to give some consideration to people like me when they start signing up companies that then have to pull their products that I patronize off of the market.