xcordia on Nostr: So this platform, as it is decentralized, it's supposed to be keeping everything ...

So this platform, as it is decentralized, it's supposed to be keeping everything submitted, in chronological order, as it has been posted/made a note on the chosen relays. Most of the people who would choose this platform, would choose it for this benefit. Now, I don't have a lot of knowledge in how this works, but one of my questions is very simple: what would be the prospect for all this to be gone? could someone, someday just end Nostr, and all its affiliated clients?