I wish that some reputable, long-lived service (like the Internet Archive) would offer free subdomains that users could set DNS records for and point to anythin

I wish that some reputable, long-lived service (like the Internet Archive) would offer free subdomains that users could set DNS records for and point to anything. Alternately, one of the TLD could provide free, low-value domains, like 2039483953-Alice-Bobson.com. Domain names are cheap, but there are a lot of people (e.g. teenagers) out there who are averse to spending money on anything. They end up posting under *.blogspot.com or whatever, which permanently ties them to a particular host and content management system unless they break any links to their content.