Originally Posted by
Kurald Galain
Yes, oh so very much.
You should have seen the first draft of 4E's license. It basically said that if you write any 4E material, you may not support any other edition of D&D, and you forfeit all your copyrights to WOTC, and WOTC can force you to cease selling and destroy your stock if they feel like it.
Granted, they've toned it down since; but the above press release caused third-party support for 4E to jump ship right at the start, and was one of the major reasons for the creation of Pathfinder.