If I want to create completely open-data workspaces, does that mean I need a $5 per viewer license for everyone that accesses it? Or would it not be possible to

If I want to create completely open-data workspaces, does that mean I need a $5 per viewer license for everyone that accesses it? Or would it not be possible to allow public read-only access? Something like this: https://grafana.wikimedia.org/ https://grafana.wikimedia.org/