Psion
Adventurer
Some publishers have been very negative towards DTRPG. I can't help but think that there is some level of jealousy going on there, having not been "invited" to join the initial offering of corporate products. I might take some heat for that statement, but I think it's true.
I don't know specifically who you might be talking about, but I think you are wrong in relation to a few that come to mind.
I would love to know who DTRPG asked but rebuffed them...