There are fast fashion attempts at this like adding elastic material to every fabric so they can get away with having fewer sizes and cuts thus less unsold inventory and availability issues. But everything has a tradeoff. In this case the elastic material degrades MUCH faster than cotton so you have to throw away your jeans quite a bit earlier compared to a quality 100% cotton denim which can last you a decade. This is very unfortunate as most of the fabric in that piece of clothing is perfectly fine and this is pure waste.