It's not just Google, Facebook, and Instagram.

purl.org (a central piece of the web) wasn't redirecting two days ago – this is run by archive.org (The Wayback Machine).

No one cares because 'Permanent URLs' haven't been a thing on the web since the 90s – except to LIBRARIANs (do you know what the Dublin Core is? the Librarians at OCLC invented purls back in the day, then handed them off to ARCHIVE.ORG)

https://en.wikipedia.org/wiki/Persistent_uniform_resource_locator

Google is adding DuckDuckGo to Chrome – do they want to hook to stop intercept calls to DDG?