Material cost, and time per part.... make a mold once, cycle it every 20-40 seconds, and you have blown away a basketball court full of 3D machines.
That may change. Probably will. But 3D printing is not the only way to run near net shape. And, it does not run "net shape", surface finishes are not "final" for many of the processes. Molding can be net shape; cut gate and use part....
3D prints commonly do not hold air or water unless done slowly. Molded parts do, one every 30 to 40 seconds, or faster.
Is it going to improve? Sure. Will it hit 40 seconds per part on a complex shape? Not for a while, if ever.
What is it good for? Very flexible manufacturing, short lead times on small volumes, very high value complex parts, etc, etc.
If you want 1000 per day, good luck as things are now.