For G Suite, "Google does not sell your data to third parties, there is no advertising in G Suite, and we never collect or use data from G Suite services for any advertising purposes."

Also "G Suite's compliance with ISO/IEC 27018:2014 affirms our commitment to international privacy and data protection standards. ISO 27018 guidelines include not using your data for advertising, ensuring that your data in G Suite services remains yours, providing you with tools to delete and export your data, protecting your information from third-party requests, and being transparent about where your data is stored."

https://gsuite.google.com/security