They will comply or be faced with "increased discipline" according to the RC. I'm sure "increased discipline" includes heavy fines.
"It’s important to remember that the Royal Commission is not a court of law and cannot make decisions about criminal matters. Rather, the Commissioners will deliver recommendations based on what they discover during a public hearing."
I'm sure all this discovery will bring up facts that can latter be used in a court of laws to put some behind bars and win big lawsuits in many counties around the world but especially in it's territories.