Name recognition only matters if there are competitors. Office is profitable because it is sold in bulk licenses to companies who don't care what it's called. They aren't going to switch to Google Office or Facebook Office because of a name change, not least because migrating comms, cloud storage away from Outlook, Teams and OneDrive/Sharepoint is unthinkable.

As for consumers, those who don't want to pay a subscription for Office (they make the one-time purchase very hard to find) are probably already on Google Docs.