We need 2 occurrences to happen so PS5 exist.
Performance leap... something that can be at least 10x better than PS4 (4x PS4Pro, which is small)
SW sales and HW starting to decrease for we to mark the release of the new console at about 2 years after it start declining.
Neither happened yet, so 3 years is almost the minimum for PS4.

duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
http://gamrconnect.vgchartz.com/post.php?id=8808363
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
http://gamrconnect.vgchartz.com/post.php?id=9008994
Azzanation: "PS5 wouldn't sold out at launch without scalpers."







