Linae, do you remember the thanks I gave you for sticking with the fans, thick and thin? Keep remembering that thanks. We're an ungrateful lot.
I don't think people are looking at the silver lining in this cloud:
IF, and I stress IF, Orcus, Lidda, and The Rouse are in agreement with what the actual contract terms will be, then the people who want to keep playing 3E should be on Cloud Nine. The GSL ensures that Green Ronin WILL be a content creator of OGL-based products for a long time to come (at least as long as M&M and True20 keep being "staples" for the company); it almost ensures that Paizo will be joining them, assuming they continue to support Pathfinder through 2009 and further.
Therefore, two of the ten biggest OGL game companies on the block are STILL going to be using the OGL, and in a position to produce 3E-based content.
Heck, make that FOUR: If Monte continues to dabble occasionally in the RPG waters, he's darned sure not going to be jettisoning his entire back product line just to do a couple of books a year for fun. Then, there's Mongoose, who's doing unbelievably well by licensing everything under the sun; they MIGHT jettison their 3E stock, but that's a more iffy call than the first three. So, FOUR of the Big Boys of OGL are still going to be catering to your needs, near as I can tell.
There will still be a good many companies following 4E because it's a better game in town for them than the OGL has been; the increased compatibility from the new logo etc. will help them get noticed in the 4E community better by general D&D fans, and without Green Ronin or Paizo in the mix, they'll only have Necromancer and a few others to compete against, a much narrower field. Heck, Green Ronin, Malhavoc, et. al. had to start the same way, and build recognition through quality, it means there's a chance for others to rise in the same way.
So IF that's the correct way to interpret the GSL license, then I'd say it ensures that some of the topmost publishers will stay with 3E, not the other way around, and give it the support that its fans will need.