So, I clearly misrepresented what I was trying to say in the first post, and I think I may have confused people. In further discussion, I tried to be more clear, but let me try once more.
Larry points out that it was my action, in part, that caused the lack of Free Software speakers at the conference--I would much rather focus on the intense focus, at the conference, on Open Source to the exclusion of everything else, than on the exclusion of any one community. See the bits in previous messages about the mission statement. My action certainly affected some magical ratio, at the conference, that represented FS-OSS relations, but it didn't necessarily change the Public Domain community's representation, so there are other groups (potentially) that need to be taken into account.
And as for the extolling of various, individual actions that happen to associate the conference very loosely with the Free Software (movement| community|Foundation), I again point you to the fact that I should originally have asked not about the exclusion of any one group, but the seeming favoritism applied to only one group (the Open Source community) which happened to strike me as providing a less-than-welcoming atmosphere.
Again, I don't expect this to be fixed, and I will consider speaking at the next conference (I hadn't come up with a topic, and was very busy this year), but I thought that the above-mentioned favoritism might be something that the planning committee might want to look into.