You are misunderstanding.
Ore .. first..buy the land, build a mine, but the carts, lay the tracks, build the infrastructure, buy the tools, etc
Smelting.. buy the land, build the factory, purchase the power/fuel, etc
Tires... Buy the land, plant the trees, tend them, Harvest the rubber, build the tire factory, design the tires, mold the tires, provide the power..etc
Again...the worker whom you claim achieve everything...can't do so... Let them provide all of the above from scratch, without capital.
See?