The unwritten rules of respecting robots.txt and not scooping up everything have already crumpled due to AI scraping.

Business Insider

Meta has 2 new sneaky bots scooping up free AI-training data from the web

Meta's new AI bots, Meta-ExternalAgent and Meta-ExternalFetcher, scrape web data and may bypass robots.txt rules.

Seems to be the trend that if you can access it it will be used. Encrypt and deny access might become the new reality, unfortunately.

I think it's similar to publishing a Torrent. You publish it to the network, it does stay at a particular place. Mirroring is common and that's what will achieve decentralization of Nostr. At some point people will run their own relay and it will mirror notes they are interested in for easy access and archival. And maybe provide read access to others. I run my relay and mirror many things with a simple shell script from cron. The rule is - if a client can get it, so can a relay, which can act as a client. I own my data in a sense that I own my identity and that I have the archive of it that no one else can delete. But as Peter said, it's digital, can be copied and people have signed it with their keys. Internet does not forget.