38% of webpages that existed in 2013 are no longer accessible a decade later

Interesting article from the Pew Research Center:

When Online Content Disappears

However, there’s no big conspiracy here:

In most cases, this is because an individual page was deleted or removed on an otherwise functional website.

The article covers links on government and news sites, as well as referencing a surivival analysis of Twitter / X posts:

• 1% of tweets are removed within one hour
• 3% within a day
• 10% within a week
• 15% within a month

Source.