About DCE:
They are afraid that once they sold anything to anyone they will be buged with questions: "How does this work, where is the missing page 89 of the documentation, do you think it will be OK exchange nomoremade part A by yetavailable part b"
I`m afraid unless you can garantee them a deal that goes like this: "I give you the money, you give me the stuff and after that we will never talk to each other again" your chances of success are slim.
About OS4 on Blizz2060 + dev board:
I doubt that it will work out of the box. For WarpOS for example a different version of powerpc.library is needed for the dev board (you can choose between BlizzardPPC, CyberstormPPC and DeveloperbBoard during WarpOS installation).
Though it might only be minor changes like how to initialise the PPC or where in the system it can be found, but they would require changes in OS4. With about 15-20 of those dev boards in existance it is (yet) doubtfull that Hyperion will put any effort in making the required changes.