I think it is pretty safe to assume, if certain manufacturers could pull it off, pinball would consist of a drain, two flippers and a bunch of rubber posts on laminate wood with a sticker for 7k.
Unfortunately, I would be willing to bet that 30 years from now people will look back at these current machines and consider them "full featured" compared to the evolution of price cutting that will be accepted as the norm.
We should get a list of cost cutting moves that have been implemented already. It would be entertaining.