Always surprises me a bit because it seems to me like those large corporate players don't necessarily need all the features offered by Ethereum (or Bitcoin), especially proof-of-work, since there's enough non-adversarial cooperation between them that a simple distributed ledger with traditional (efficient) consensus mechanisms would suffice for most of their applications. They wouldn't have to deal with the drawbacks…
Those companies are using Ethereum without PoW in their private networks. They plug in a different consensus model.
What does Ethereum with no PoW bring to the table?