You're right in theory, but that's only really a risk if it actually works, which this doesn't. Also, if the author is interested in increasing market efficien

You're right in theory, but that's only really a risk if it actually works, which this doesn't. Also, if the author is interested in increasing market efficiency, but not in exposing themselves to the risk of being caught in a halfway position when an exchange breaks, it makes sense to release as FOSS. The target users would then be the exchanges themselves.