Then don't buy it. Once again, not everything has to be free in this universe, even more so as some party is apparently putting money into it. Its *own* money. It's not morally wrong to buy something for money, you know?
Well, free as in beer is certainly a possibility. I asked nicely for a copy of the DDK about 11 years go (yikes!) and received one with the only stipulation being obfuscation of the driver interfaces behind a closed source shim. (But honestly, everything in m68k Amigaland has been decompiled, reverse engineered, and analyzed to death at this point. I'm surprised we even need a DDK.)