Looks like they do have a 'survival clause' in their privacy statment:
Business Transitions
In the event that 23andMe goes through a business transition such as a merger, acquisition by another company, or sale of all or a portion of its assets, your personal information and non-personal information will likely be among the assets transferred. You will be notified in advance via email and prominent notice on our website of any such change in ownership or control of your personal information. We will require an acquiring company or merger agreement to uphold the material terms of this privacy statement, including honoring requests for account deletion.