There is no need to suspect that there is a strategy or evil plan behind this. I don’t think there is much interest for more frequent backups. If there was, someone would have written a plugin for it. That would be a few hours of work. I don’t see Marketplace flooded with requests for it.
I think it boils down to:
- for small forums, you won’t lose much data anyway because there is not much new in a day, so more frequent backups are not really worth the effort
- for larger forums, more frequent backups will take performance and storage
- for really large forums, you want to look at different solutions (like replication to a hot standby database server)
Don’t forget that the odds of actually needing a backup are really small as well. In the history of Communiteq (over 8 years), we only needed to restore a backup once* and that was only because we were impatient and did not want to wait a few hours for a file system recovery.
*) (excluding restores on request of the client where they just wanted to roll back changes, mostly in non-production forums, and excluding our monthly restore test)