After I made this comment this I realized that the best thing might be to connect you with the people who do bizdev at the WMF. ;) I've already sent them an email, I'll be in touch soon.

Also, the 'full disclosure agreement' is just an inside joke. But, a real-world example. Facebook was creating topic pages, and they wanted to seed them with Wikipedia content. While our bizdev person was arranging that, they refused to sign NDAs. So every time they visited Facebook, the people at FB erased every whiteboard they might see coming or going.

I think that might give you a good indication of what you're up against when it comes to openness and corporate partnerships, but also some hope that other arrangements are still possible.