Resources are expensive, so the fewer you need to produce a good, the cheaper the good. Thus capitalism naturally strives to use as little as possible.

Efficiency here is more dollars out per dollar put in, but because resources such as land, raw goods, time, and labor (especially unpleasant labor, since it costs more) all cost money, it ends up pushing for using as little as those as possible.

There’s another positive outcomes of this drive toward efficiency as well though, it encourages recycling. Garbage is an extremely cheap resource, since not many people want it, and if you can figure out a way to utilize it, you’re making a product from very cheap resources, and can make a cheap product.