This is a fantastic summary of learning in networked environments.

Where I struggle is in developing/stimulating/catalyzing self-directed learners (I'm not sure which verb is most appropriate, since I can't make anyone want to learn). Somehow that passion needs to be ignited, it won't "just happen" in the absence of barriers. The key may be in your three indicators - seniors leaders walking the talk, both valuing and demonstrating the value of what I call "on fire" learning, where we constantly look for the learning opportunity in every situation.