I've just learned that Google Realtime API is now deprecated. It is suggested to migrate to Firestore instead. However, Firestore's model is not built around Google Drive so it will not be possible to manage and share real-time documents via Google Drive.
Is there any alternative migration path that would keep files stored in Google Drive?
For example, real time documents may have a simple API endpoint that would allow to get and save them as pure JSON. This would mean that we can keep using Google Drive to store our data and only use Firestore to handle real-time editing sessions (if this is needed).