Of course it will happen. This is a exponentially expanding technology. Every company that has a core technology of moving parts will jump in.
First, it will be all about extruding more materials faster and mixed materials. Then they will go after the protection of proprietary filaments and pastes to insure a steady stream of income.
Printers will cost $100, plastic will cost $50 a pound. Liquid chrome will cost $150 a pound.
It'll be a fun ride.