This is my philosophy of Nostr.

Any data created by the user of a client is owned by the user and should be on relays.

Any data, in its independence from the client, if it has no meaning, then that data is equally owned by the client and the client can choose to put it on the relays or not. In a sense there is freedom of choice for everyone.

It might be the client’s moat to present the data and should be incentivised for then we have competition, an invisible hand that churns innovation.