What is/are the purpose(s) of region-locking video game systems? Is it a decision made by the console's developer (i.e. Nintendo) or this is enforced by governments?
As far as I remembered, it began with the Super Nintendo and the Super Famicom as a Japanese equivalent. Then Sony also region locked some of their first PlayStation models. Some manufacturers like Nintendo are still region-locking their system.
Do they ever exeplained why (in official sources)?