I don’t think a vertically-integrated television manufacturing plant has ever existed in the U.S.
Very early car manufacturers. Today, some artisan type shops, such as jewelry and furniture.
I used to work (1990’s) just down the street from Ford’s River Rouge plant. Sometimes on my lunch break I’d drive down just to poke around. Pretty cool . . . you could see the docks where the ships unloaded their iron ore, etc. By the 90’s I think the terminal already belonged to another steel company. So the complex was in separate pieces.