pawsplay said:
But you really don't know, since we haven't conversed at length on the subject. I suspect that the same rules that prevented Microsoft from keeping other companies out of the Windows software game apply to WotC. "Antitrust" is a linguistic quirk of being an American; I am talking about anti-competitive business practices.
Except it isn't anti-competitive.
1) The whole point of the OGL/GSL is to actually give other companies the ability to produce material to support the game. Most people -and WotC - take the long view that this is healthy for the industry overall, even though it is technically still competition.
2) Companies are still free to produce 3.x material, even though it will compete against 4E for market space.
3) Companies will be able to produce 4E material (just not if they also produce 3.x)
4) Companies are still free to produce whatever non-d20 game they like and compete directly with WotC in the marketspace.
So, anti-trust, anti-competitive - neither apply. Even if WotC had said "Nobody but us can produce 4E material", it still wouldn't be anti-competitive. I mean, I haven't heard White Wolf called "anti-competitive", and they don't let anyone else publish game material based on their system/IP (with the exception of some very specific, short-term license agreements.)
Now, if WotC told retailers and distributors that they can only sell D&D products if they remove all White Wolf and Steve Jackson Games material off their shelves/catalogs, that would be something else entirely. But even completely ditching the GSL for 4E wouldn't even be close to that.