https://www.theguardian.com/australia-news/2022/sep/24/optus-cyber-attack-company-opposed-changes-to-privacy-laws-to-give-customers-more-rights-over-their-data

In its submission to Privacy Act review telco said giving people right to erase personal data would involve ‘significant’ hurdles and costs

Optus has repeatedly opposed a proposed change to privacy laws that would give customers the right to request their data be destroyed, with the telco arguing there were “significant hurdles” to implementing such a system and it would come at “significant cost”.