Their motivation can be as simple as "I want to". I'm not really sure what you're hoping to achieve with this line of questioning?
Modern carbonated beverages do not use soda, and they haven't since the 1800s."Pop" is from the sound you get when opening a bottle.I'd say one is much more applicable than the other.
In an enterprise setting you'd use something like Active Directory-Based Activation.You store your KMS key in Active Directory, then any machine that contacts the domain controller will be activated.
There's also just LMDE (Linux Mint Debian Edition)