I guess my original comment was suggesting that someone could look at the source, get a bunch of ideas, then go build something very similar with relative ease

I guess my original comment was suggesting that someone could look at the source, get a bunch of ideas, then go build something very similar with relative ease. They wouldn't have to use the same code, but given a code base, organizational structure, and a clear end goal, someone dedicated enough could mimic its functionality in an open source project or roll just the portions they need to prevent any licensing. Not saying they may not get chased down for it, but if its their own code and it's different enough, Senscha has given them a route to this purely out of the fact the source is visible.