The case law provides a lot of room for discussion on what is publicly available.
For example, in terms of public access to the courts, one principle upholds the public nature of the debates in court. It is called the “open court principle”.
There is a lot of discussion on what that means. It does not mean that the entire content of court proceedings must be available online. It just means that a person can apply to the court to ask for a copy of the proceedings. There is no general definition of what is publicly available, to my knowledge. This is one example that deals with public accessibility.
The Access to Information Act talks a lot about what should or should not be available to the public. There is a lot of case law on the limits of what should be accessible under the Access to Information Act, for example.