What length exactly? Both Sony and MS released, at some point, SDKs that could use a retail unit for development [1,2,3,4] so I am not sure this is exactly why.

What length exactly? Both Sony and MS released, at some point, SDKs that could use a retail unit for development [1,2,3,4] so I am not sure this is exactly why. 1.https://en.wikipedia.org/wiki/PlayStation_Mobile https://en.wikipedia.org/wiki/PlayStation_Mobile 2.https://en.wikipedia.org/wiki/Linux_for_PlayStation_2 https://en.wikipedia.org/wiki/Linux_for_PlayStation_2 3.https://en.wikipedia.org/wiki/OtherOS https://en.wikipedia.org/wiki/OtherOS 4.https://en.wikipedia.org/wiki/Microsoft_XNA https://en.wikipedia.org/wiki/Microsoft_XNA