Steve,
I consider a closed system when
a) there is not a wide easy available choice of alternative products.(If there is then perhaps you can list them?)
b) the processor and processing regime will not process other products giving the customer little or no options unless he changes the processor.
c) If a customer wants to change to another product can he do it easily and quickly using same equipment?
It is a fact that customers with 5mw lasers and silver processing equipment have very little choice to get alternative product that will work with both the setter and processor.
Customers having 30mw or higher Violet platesetter have a large choice of Violet Photopolymer products on a global basis and plates which will process in the vast majority of photoplymer processors out in the market.
Kodak, Fuji, Agfa, Konica, IBF, TechNova to name some, all offer Violet Photopolymer plates, which process through, G&J, Heights, Haase, Krause, Agfa, Fuji, Kodak processors.
Not only Violet plates but in newspapers there are also Thermal Photopolymer plates which can also use these photopolymer processors.
I stand by my comment,
Regards