Not really worry about having enough land. Even if 100% automated, there might still be a residual cost to building as it needs energy (assuming than raw mater

Not really worry about having enough land. Even if 100% automated, there might still be a residual cost to building as it needs energy (assuming than raw material is free). I do not think that because the building would be not free, it would allow human to compete (too slow, inaccurate, etc.)