A DAO focused on gaining revenue doesn't need to hire people to achieve that.
There a decentralized asset exchanges where other companies have raised capital. A DAO could access those to buy shares completely programmatically, for example. It could trade oil futures till eternity if it wanted. It could create a contract for an agent at a particular address that promises payment for the construction of a robot factory in Shenzen, in that example a human would be the agent on the other side of that address, but the DAO doesn't need to know that.