[NamTaf]

Fashion is one of the few remaining industries where obsolutely zero consideration is given to environmental impact when designing and producing clothes. This isn't just a poor country thing where they make clothes in a enviornmentally destructive way, the design of the clothes involves IMHO a lot of un-necessary production steps for an extra minuscle percentage of improvements.

It's interesting that you highlight this, as fashion is one industry that springs to mind where the costs of production and the costs of sale do not correlate nearly as closely as with other industries.

In your car part example, the cost of production viz. energy inputs is priced into the end product, so that there's a direct financial incentive to drive down that production cost. In contrast, fashion has 'premium product' overheads which in many cases dwarf the possible efficiencies derived from production, disincentivising their realisation. Indeed, in some cases less efficient production is more desirable, for example with handmade and bespoke items rather than efficiently mass-producted items.