So if you get terminated from 4e, and cant go back to OGL......what WILL you do with your IP exactly?
Whatever you want. You're just not allowed to enter into the OGL license with WoTC anymore.
Benefits of the GSL for third party companies:
1. You gain the ability to put the D&D logo on your product. Not just a symbol that says it's compatible with the base system D&D is built on. The actual D&D logo.
2. Your books get to use the same templates, names, and general "look" of the main books.
3. Your books get to use the future templates, names, and general look that come out down the line.
WoTC is trying to grow the market. If they succeed, having the look and feel of the offical game products is a big benefit. More people in the market see your product which looks just like the main books, plus has a big ol D&D logo on it. More chance that they will buy it. More sales for you. Woohoo you! people on enworld tend to be a bit more then the average "gamer." They know more about the industry, and how things work. But the general gamer... If it looks like a duck, and tastes like a duck...
If you don't think the above wil be beneficial... Don't enter the GSL. That's a business choice you make.
If you're worried that you can't enter the same product into the OGL after you've entered it into the GSL... You can choose not to use the GSL. (But then you don't gain the above benefits... so thats another business choice to make.)
But my question is: What's the problem?
Ok if you want to just support more games then D&D. Cool, I can understand that. Yeah it sucks you can't support both D&D and an OGL game with the same product... But do you really NEED to? Can't you make two seperate products? They're not going to be exactly the same anway, and you're a creative feller (I mean you're a game designer right?) so make a line of products supporting D&D and one supporting others...
Ok you have a product that is popular and OGL, and you want to update it to make it support D&D, but also support other OGL games... I can understand the issue. But again.. You're creative. I liked your stuff in the past. Make something new for D&D. I'm guessing if I liked your old stuff I'l like your new stuff. Plus I get annoyed when it feels like all the new stuff is just updates. Give me some new stuff.
If you just want an escape route to thumb your nose at WoTC after they say your product is harming their brand in some way. Sorry... you're out of luck. (To a degree, as yeah there are other options, but then again, you don't gain the benefits of the above.)