A closed-source code base is a huge, ever-fading inertial mass. When it begins, with those first exhilarating lines, or even up through the first few releases, you can truly say that you are writing it. But after a while, it is more like you are tending it – or feeding it. It becomes an investment, an asset, a castle you are protecting, which means all your strategies are defensive and your dreams will not stray far from your spot of holy ground.