What is required to be a corporation is not really a legal gray zone. The DAO doesn't operate in a legal gray zone as to that characterization, its just flat inaccurate.
Insofar as the DAO is a mechanism for constructing contracts between actual legal persons (either natural persons or corporations), it may operate in a poorly-tested area as to whether valid contracts are formed, how those contracts are interpreted and what law they are governed by, and whether and to what extent they are enforceable, true.