The concept of a DAO is too simplistic when presented in all these examples. An organization has multiple levels and on each level there are many decisions being made constantly. Some escalate up, some don't. You cannot just expect that each decision within an organization will be decided via a DAO's shareholder voting mechanism because what will ultimately happen is, there are so many actions to vote on, shareholders will ignore most. If there were 100 shareholders, 2 voted yes, 1 voted no and 97 didn't vote. Do you proceed? This is why a board exists, to represent the interests of shareholders. How much work do you think would get done if you needed to prioritize things with a large body of shareholders on a regular basis?