We will never make 4E products because of the GSL. I just don't want to trust any part of my future to an agreement with another company that can be changed or cancelled at any time at their whim. Thankfully, Paizo is in a position where we don't have to put ourselves into that position, which I am thankful for.
On top of the legal issues with the GSL, there is manpower issues. I really would have to hire quite a few new employees and as I have said upthread, I am trying to keep our headcount the same so we don't start growing too fast. Add to that the fact that none of my employees are experts of 4E, and you can see that expanding our product line into doing products for 4E is fraught with too much peril, especially since the info I have is that 3rd party products for 4E are not doing very well at retail. I think doing 4E would be one of those instances of expanding into an area that we really shouldn't.
-Lisa
I repect your reasoning even though I do not agree with it.
You do not have to sign the GSL. The only thing to get my business (and by the looks of it, several of us 4E people) is to have a seaparate PDF with 4E encounters available when you purchase an adventure path.