I used same method to separate fiberglass moulds works very well.
As for companies taking advantage I can understand your position,I had an idea to save a big food company loosing product on the conveyor line due to the product jamming on the line prior to a change in to a storage tray system and incoming units crashing and destroying themselves. I spotted a method of relieving this but the company did not offer any reward so they lost out on saving costs. Stingy companies get what they deserve.