"EPL-like licenses send the correct economic signals to rationally incent the behaviour that I want to see: commercially profitable ecosystems built on top of vibrant open source platforms."
The GPL may be a community-building signalling device, but it is also a confession of fear and weakness. To believe that it matters, you have to believe that you live in a Type A universe where closed-source development is such an attractive proposition that you have to punish people for trying to move to it.