Please allow me to speak a bit about architecture:
In Swarm, any node address is derived from the owner’s Ethereum address. And the addresses of the chunks (data units) are the Merkle root of the content. This becomes useful if you check them in smart contracts as you can easily create inclusion proofs for the content.
For example, if you want to store a long whitelist (>1000 element), you can store it on Swarm instead of the blockchain, and verify the membership by a smart contract using Merkle proofs.
And if the cost is too high, you can create full rollups on Swarm where the state root is also the content address for the whole state.
Swarm’s content represents a different philosophy: persistence is an uploader’s decision, and only his. Not that of the individual nodes or the operators. Content will be immutable and alive as long as the uploader wants.