If he has a signage business that is capable of reverse printing straight onto acrylic then id say its a big business.. this is not a cheap machine to buy and i only know of a couple of places in the Brisbane region that can cater for this. When i or any of my business colleagues have need for this we sub the work to them at wholesale rates.
Chances are he has screen printing capabilities also.
Own CNC routing and most likely laser cutting services etc.

Charlie would be in a very good position to manufacture a pinball, with his resources and contacts id say he is on solid ground.

The whole idea sounds very exciting.. id love to see a snippet of whats coming.
Id love to buy from one of the new manufacturers... its a balance of theme and price for me, so i look forward to the end result because the theme has already won me over