It just sums everything up in such a clear and precise way.
Indeed and the way he phrases that description also gets you thinking straight away that this technology is not only about Bitcoin alone, but about so many other things that could and probably should be organized the way he described it. Private property / digital private property is a concept that has its roots in so much academic research that the range of possible applications is almost inconceivable. It does become difficult though when externalizations like oracles come into play. That's why it is, as of yet, more suitable for digital property obviously.