You can now make any web server operate with a publicly valid TLS certificate without paying any money, registering a domain, configuring DNS or disclosing any personally identifiable information. It can be entirely automatic and zero configuration. The only additional service required is something like a STUN server so the public IP can be discovered and updated over time.
PKI as it stands is only a few steps from Google just deciding everyone must have a short-lived certificate from Google to be on the web.