What about things that aren't owned by anyone in your social group, and are too expensive/rarely used to justify buying yourself? Say the chocolate fountain: no

What about things that aren't owned by anyone in your social group, and are too expensive/rarely used to justify buying yourself? Say the chocolate fountain: no one really needs it bad enough to buy one, but if you can sell access to one for some small fraction of that cost it could become a reasonable expense. A similar logic can be applied to a table saw, or to a dremel, or to a soldering iron. This service removes circumstance and adds reliability to borrowing. And maybe it does reflect something sad about socialization today, but that doesn't mean it isn't useful or good.