I didn't say that researchers should publish binaries without source code, I said they should hold off on publishing at all. This isn't about open vs. closed source.
Open source is about publishing the code (and allowing it to be reused). You're talking about not publishing the code. Plenty of software companies don't publish binaries (e.g. Google, Facebook). Binaries or no, it's not open source if you don't even publish the code.
http://blakemasters.tumblr.com/post/24464587112/peter-thiels-cs183-startup-class-17-deep-thought
Some perspectives on AI risk that might be interesting. Peter is (the primary?) donor for SI, and an investor in AGI startup Vicarious Systems.