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Well, it might be possible to have an actual fee (sent to some kind of charitable account) for uploading files on the blockchain. Like if it's done via HF, one of the biggest contributors to the platform could get funds for bounties, like DTube, utopian-io, DMania.lol and so on.
I mean that (if using memos) you could tick something and then select a destination for the fee, but the memo content will still be sent to yourself.