Many users unknowingly have their Google accounts linked via phone numbers, blending work and personal data against their intentions.
Offer a dashboard that detects and helps sever unintended linkages between Google profiles, plus tools to maintain separation.
Privacy-conscious professionals and organizations would pay for ongoing monitoring and separation maintenance.
Start with an analyzer that shows current linkages across a user's signed-in devices.
The risk is Google changing underlying mechanisms faster than you can adapt.