What's the purpose? Companies are obviously not going to do that if they have autonomy since it's inefficient production. Instead, the government will have to

What's the purpose? Companies are obviously not going to do that if they have autonomy since it's inefficient production. Instead, the government will have to do so, and at that point they only do so to pump money into the economy. Why not instead spend that on NASA like space programs instead? I've long advocated for a "techno-Keynesian" approach to economics.