+1
That's what I once thought (i.e. that Hassy closing their system was a mistake) but maybe not
Consider this point. In my view, there is a key difference between Phase and Hassy.
Hassy are camera manufacturers who added digital back capabilities when they acquired Imacon, but fundamentally, the camera comes first, the digital back second.
Phase are digital back manufacturers who added camera capability when they acquired (or merged) with Mamiya, but findamentally, the back comes first, the camera second.
I think that these historic differences still inform the psycology of both companies today.
When Phase release a new series of backs, the camera is secondary (see Michael's interview piece). However when Hassy introduce a new product, it is defined by reference to the camera system, such as the H4D, with different digital back options. These different approaches are a result of the different histories of the two companies and probably explains why Hasselblad see the back as more closely tied to and part of the camera system, a link they want to protect.
Quentin