Why are games region locked?

Related questions

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2. Are PS3s region locked?
3. Do DS games save on the cartridge or console?
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5. Is ps3 region free for ps1 games?
6. How much did the Gameboy Advance SP cost when it came out?
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Tags

1. #regional
2. #market
3. #prevent
4. #enforcing
5. #imports
6. #price
7. #reasons
8. #enforced
9. #product
10. #territory
11. #release
12. #accessing
13. #their
14. #content
15. #hinder
16. #because
17. #either
18. #discrimination
19. #certain
20. #several
21. #users
22. #stagger
23. #legal
24. #lockout
25. #wikipedia
26. #according