To which extent this could happen with #nostr content? Are ownership keys enough to avoid that all the content can be used to train an AI?  nostr:npub1qnmamgyup683z9ehn40jrdgryjhn8qlpntwzqsrk8r80n3xspdrq4r245g nostr:npub19mduaf5569jx9xz555jcx3v06mvktvtpu0zgk47n4lcpjsz43zzqhj6vzk nostr:npub1nstrcu63lzpjkz94djajuz2evrgu2psd66cwgc0gz0c0qazezx0q9urg5l