That's interesting.
As I said, I know these discussions happen, I just think they happen mostly in General RPG at the moment (again, for better or worse I don't know really).
The threads you link to are from a year ago (Aug-Sep 2009), so I'm assuming that kind of activity there died down a while back? - perhaps because of the announcements burying them - and perhaps that's what drove those discussion to the General RPG forum. That certainly would be unfortunate to have happen, to have announcements trounce on good discussion, but here's the angle I'm looking at this from...
In order for a topic to warrant it's own forum, it needs to either a) be a very hot topic capable of producing a large number of topics on it's own, daily or b) be different enough from anything else that it just needs to be it's own thing.
That kind of discussion (RPG Industry topics), at least to me, fits fine in the General RPG forum. They don't stick out to me in that forum in a "what is that doing here" kind of way - in fact, they seem to fit right in. But that's my opinion. Maybe that's because the topic is not as near/dear to me as it is to you - so I may be bias in that regard - that would be fair to say for sure.
I guess the question is this...
1. Let's assume an "Announcements" forum was created.
2. Let's then assume that people with announcements then began posting them there, instead of RPG Industry.
Now, do you think people would move any of their "freelancing, publishing, the industry, licensing, design, and discussing industry trends" talk to the RPG Industry forum from General RPG?
I think SOME might. I think the Mods would have to move the rest, or regularly remind people of the separation of Industry talk from General RPG talk. So, again, my problems with this are that a) this re-org is meant to discuss getting more content into General RPG as opposed to removing it and b) while I think the topics you have linked above are great and have value, I'm not sure they don't fit into General RPG.
I would find it hard as a Mod to pick out those discussions for moving. In fact, your classification of these topics as "freelancing, publishing, the industry, licensing, design, and discussing industry trends" seem to me to be exactly that - General RPG discussion. If you say, for example, you want to talk about the RPG Industry, my response is that that is a pretty General topic.