If you own skis (or any of the other items), you don't just own some skis; you own those skis. They're sized to you, you've used them the last 100 times you we

If you own skis (or any of the other items), you don't just own some skis; you own those skis. They're sized to you, you've used them the last 100 times you went down a mountain, you're accustomed to exactly how they handle, and the left ski boot's padding is a little more spacious because your left foot is a little bigger, and has worn away the padding more. Yes, you don't use them, but between the custom fitting and the emotional attachment, they aren't fungible anymore. Which is, I suppose, the point of the article: if you declare something to be freely exchangeable, then you can have a much more freewheeling style of life.