Besides cost, which you mention, but is the dominant reason. If they were $100, you’d see a lot more, at 25–100x that, they’re going to be a niche item for the time being.
- Most print in a particular medium, and those aren’t particularly strong, flexible, or useful beyond modeling purposes. Most people don’t do much modeling around the house or the office.
– When we do need a custom part, it’s rarely one I would make out of plastic, sugar, or resin as my first choices
– They aren’t easy to use or design with. 3d design isn’t rocket science, but it’s a bit tougher than word processing
– a box made of plywood and zipties will never be a widespread consumer product. It’s not meant to be, and this isn’t a knock on the makers, it just hasn’t matured to that point yet