It would be an awkward conversation: “Our healthcare system is so insecure that a stupid computer got in” “Our stupid computer is so advanced it can break into this incredibly insecure government system”.

They didn’t get anything valuable, only the exact records of how much the government is subsidising commercially available medicines on the Pharmaceutical Benefit Scheme. This information is of no commercial benefit to anyone (for example Pharma Bros)

Seriously, it wouldn’t surprised me if some Pfizer executive asked an LLM to make a commercial decision for him because he was too lazy and the LLM cracked into the PBS for him.