[jpetso]

Imagine you have a portable laptop that works for 95% of all your use cases except those days when you need a cluster of GPUs training a ML model or doing some large-scale scientific calculation.

Imagine having a fridge that isn't cold enough for storing ice cream and frozen veggies.

And yes, none of my shoes are even remotely close to covering 95% of floors. Some are good for hiking, some are good for running, some are warm in the winter.

The issue is not the lack of 100% coverage. The issue is that there is no sufficiently appealing option for a large number of people to get access to the 5% of cases when you do need it. Apparently rentals and other sharing options aren't quite up to snuff, so everybody overprovisions like crazy.

[somerandomqaguy]

It's not exactly irrational though. Swinging back to car rental companies, they will overbook their vehicle fleets in order to maximize the amount of time that they're out generating revenue. Even if you prepay a reservation, it's no guarantee you will get a car.

It gets awful stressful awful quick when you have to deal with availability uncertainty and other things depend on it.

[coderenegade]

Those items are all vastly cheaper than a car. When shoes were expensive relative to what the average family could afford, families bought for quality and longevity, because they would need to last for years at a time, and most people only had a single pair.

A car is just a fundamentally different product to a set of shoes. If cars ever get to the point where the cost of one is trivial for the average person, we'll probably see the kind of specialization you see in other cheaper products. Also note, we can see pressure in the opposite direction for phones. Phones have become more expensive as they become more general purpose.