"Quite why Sony feels it necessary to create its own version is a mystery, though the cynical might suggest that the licensing schemes are the most important factor here."

Please. It's Sony. They have a raging hardon for creating new proprietary formats. Lucky for us, most of them fail.

I'll be the PS4 supports TransferJet.

You mean proprietary formats like CD...

I think Redmond/WA has put your P45 in the post...

They're only remembered for the ones that do though.

These Sony things didn't fail...

Compact Disc (sony/philips)

DVD (jointly with many other vendors)

MF2 (otherwise known as the 3.5" floppy disk)

Minidisc (it wasn't a huge consumer success but it was a big broadcast audio success)

The Aperture Grille CRT (Trinitron, to you and me)

DVD+R, +RW

Blu-Ray (well it beat HD-DVD but some might say it just hasn't failed *yet*)

Betacam (not betamax)

Walkman

Transistor Radio

etc.

DAT

Also about 70% of the TV you watch is filmed on Sony Camera's