It doesn't. There's no replacement for experience and actually working on things for real. A lot of 'makers' don't understand this.
Just as an example, Ikea is manufacturing ten thousand flatpack shelters. This was the result of people with materials experience getting together with people that manage refugee camps and are aware of the conditions, and people that do shipping and other materiel distribution, so that they could manufacture something that's durable, simple to assemble, and capable of being transported easily. Sure, corrugated plastic, extruded metal tubing, and rivets aren't sexy like a 3d printer, but the point was to build and deliver a product, not to navel-gaze in self-congratulatory smugness while the 3d printer warms up...
Sorry, I don't have a lot of respect for "makers". Those that self-identify with that label are as silly as those rooftop gardeners in high-density environments that try to call their 2' by 6' patch of dirt a "farm".