Memory Pro Duo was a complete crock as well. My guess is some suit at corporate had a powerpoint that said the Playstation Division needs to support and be better integrated with the memory storage division for better "corporate synergy." ;-) If they allowed Vita to use standard MicroSD, they'd maybe sell a whole lot more hardware. The "razor blade" business best practice is hardwired into many execs.
But IMO, proprietary memory formats make baby jesus cry.
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