DAOs are a bit fluid, even evasive, in definition but there are plenty out there (e.g. VitaDAO) which essentially function as an alternative organizational structure to traditional corporations. To function outside the crypto space (or really legally at all), they have to at least create shell LLCs which are governed by DAO decisions. Very few DAOs seem to get that far and instead choose to operate in the greyzone. As the space matures, I think we'll start to see a few large corporations which use on-chain voting in place of shareholding meetings. Whether this will otherwise cause any meaningful differences in how companies operate remains to be seen.