I am pointing out that existing Windows feature (File History) exists as alternative to Windows Backup (which requires Microsoft OneDrive, which is free only upto 5GB of cloud storage).
You are the one missing the point by suggesting off-the-shelf backup solutions.
For corporate users, getting off-the-self solution as alternatives (even if it's open-source) software may not be easy (corporates typically have strict controls on what software they allow for users, and usually they contractually need to reveal to customers if they are using open-source software), but they can use File History for free, by setting it to back it up to a network path/drive if their IT admins permit.
