You didn't realise that Hasselblad made their system closed out of a monopolistic desire to drive competitors out of business, whereas Phase are "open" out of benevolence towards their fellow men? You must get out more!
If you equate a unified/closed system to a "monopolistic desire to drive competitors out of business", then I guess I'm a fan of monopolies. I own Nikon DSLR gear, three Apple computers, an iPhone, an Epson printer, a Jeep, a Cadillac, and, as of yesterday, an H4D-50, all of which are unified/closed systems. Having worked in a monopoly (the old Bell System) for years, and having been a part of the creation of several non-monopoly competitive businesses, Phase One and other manufacturers with open systems are not doing anything "out of benevolence". You're quite naive if you have that belief. It's all about the next profitable quarter.
Or maybe your statement was made with tongue firmly implanted in cheek.