The extraction and refining of the copper ore needed for the motor, which has brushes (so a finite lifespan) but is also sealed without any way to replace those brushes (not to mention the hassle of getting into the door . I don't think I've ever done it, on dozens and dozens of doors, without breaking clips), so they're manufactured essentially as a throw away item, the opposite of sustainability.
Manual windows are easy, take no thought and if the window falls off track, you just get into the door and bend the track back into shape. Anyone can do it. You just got to open it up, roll it up and down a couple times to understand how it works and literally anyone can figure out their fix then. And at a cost of a few door clips, not an EXTREMELY overpriced $100+ for a 12v motor.
I don't like buying guaranteed points of failure in my purchases when I don't have too, that's all I'm saying.