SpeedFan can report the speeds of each fan and it can even change their speed based on current temperatures. This lowers noise and improves computer experience. SpeedFan can access the voltages reported by the hardware. This can help to identify odd issues with computers resetting under stress, for example.
So while securables created by the database owner actually are owned by dbo, this is still the user that created them. Also, most objects are probably not created by the database owner itself, so this still does not explain why most securables end up with dbo as owner.
Ownership of Files and Folders. The owner of a file or folder is the user who has complete and full control over that file or folder in terms of being able to grant access to the resource, and also allow other users to take over the ownership of a file or folder.