Anyone can still edit Wikipedia. Without even signing in!

Anyone can still "join" the IETF:

"There is no membership in the IETF. Anyone can participate by signing up to a working group mailing list (more on that below), or registering for an IETF meeting. All IETF participants are considered volunteers and expected to participate as individuals, including those paid to participate." https://www.ietf.org/about/introduction/

We still have a public interest Internet, and even World Wide Web, if we can keep them!