They do - for once its not a single manufacturer - its all manufacturers and if the price is cheap enough.
Look at OTL: modern youth they run to the cheap discount shops and buy low quality goods en masse - wear them a few times and they develop shoddy spots, holes, the fabric becomes (don't know the correct englic word) distorted? colors fade...
OTOH if you buy a piece that costs 2-3 times the price from a quality product you will notice that it holds shape colors and holes/rips are almost unheard of.
Basically you have to invest some money first to save money later...
The problem for the POOR masses is that usually they don't have the money to invest, they must buy low quality product and will pay more in the long run.
Thats why the rich get richer and the poor stay poor.
Better quality clothes rarely last 2-3 times as long as low quality ones. If nothing else fashions change, they wear out etc.