Why can't I play ps3 games on ps4?

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Tags

1. #launching
2. #accessible
3. #simpler
4. #games
5. #lacked
6. #comparison
7. #backwards
8. #playing
9. #purchasing
10. #wallet
11. #library
12. #harsh
13. #little
14. #ideal
15. #truly
16. #playstation
17. #classics
18. #convenient
19. #compatibility
20. #since