Amazing that Disqus comments are still live for this page. More impressive even than the website itself being live.
> entering the characters http://www.longbets.org/601 into the address bar of a web browser or command line tool (like curl)
The part of this that's most likely to fail at some point is the "http://".
It's all a matter of whether someone is willing to pay for the hosting.
Which is not, in my opinion, how things should be hosted on the Web.
Freenet had a different approach, even back in the early days (two decades ago). I interviewed Ian Clarke about it https://www.youtube.com/watch?v=JWrRqUkJpMQ
I wrote about it for years: https://community.intercoin.app/t/who-pays-for-storage-nfts-...
And recently I built Safecloud to be different: https://safebots.github.io/Safecloud/
At a certain bet size it would almost be self-fulfilling, heh, as one side would be very incentivized to keep at least that url working (buying the domain + hosting it if the page were to die)