[fanpuns]

One thing I always think about with lists like this is that those goods are made to be consumed at the level in which they are currently being consumed (i.e. not very much).

A few examples: Consumer grade tools and appliances will reach what their manufacturer considers a lifetime's worth of use very quickly with increased utilization and likely fall apart or stop working as expected.

Purely mechanical things, like a bike, require regular and predictable maintenance with use.

It may seem like these items can be rented out "for free" because our own utilization is so low, but if you get a 5x increase in use, you can quickly find your margins evaporate to repair costs.

Obviously it is possible to turn these into successful businesses, but there is nothing magical about the fact that they are currently under utilized.