Induction heating does have industrial applications. It is used for forging and melting metals for casting. It can be used for brazing and treating metals. All of this can be done without the need for heating a furnace for hours, heating the metal for hours, and then cooling everything down.
You can use it to cast items in a mold.
The mold doesn't have to fit in the coil, casting usually takes place with molten metal being dumped into a mold rather than trying to melt the metal in situ.
True, but "in-mold" casting sounds like something that might result in a better product, with less possibility of under-filling the mold, or having voids in the molded product, etc. Then again, I really have no clue...