1) Business accounts aren't used for advertising.
2) Not paid business accounts.
3) Not for paid business accounts.
For 20 years people have complained of 1,2,3 for free accounts, and said that they'd prefer to pay to avoid these issues. Now that there's an option....
https://workspace.google.com/learn-more/security/security-wh...
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Our philosophy
Google Workspace customers own their customer data, not Google. Customer data that Google Workspace organizations put into our systems is theirs, and we do not scan it for advertisements. We offer our customers a detailed Data Processing Amendment that describes our commitment to protecting customer data. Furthermore, if customers delete their data, we commit to deleting it from our systems within 180 days.
No advertising in Google Workspace
There is no advertising in the Google Workspace Core Services, and we have no plans to change this in the future. Google does not collect, scan or use data in Google Workspace Core Services for advertising purposes. Customer administrators can restrict access to Non-Core Services from the Google Workspace Admin console. Google indexes customer data to provide beneficial services, such as spam filtering, virus detection, spellcheck and the ability to search for emails and files within an individual account.
Limited data use
Google does not use any of your data for any purpose except to provide you with the relevant Google Workspace service. For example, when customers use the Cloud Translation API, Google will not make the content of the text that you send available to the public, or share it with anyone else, except as necessary to provide the Cloud Translation API service.