Why Sony Has Never Pursued Another Handheld Console Like the PSP or PS Vita

RIP PS Vita: Sony officially ends production - Polygon

Sony Rumored to Be Working on New Handheld Gaming Device - CNET

Sony Is Ending Production Of Physical PS Vita Games In America And

The portable PlayStations were Sony at its most ambitious - The

Why Sony Has Never Pursued Another Handheld Console Like the PSP

Sony Is Sadly Finished With Making New Handheld Systems

Sony PSP rumors: did Sony just hint at a 5G PlayStation Portable?

Report: Sony May Be Working On A New PlayStation Handheld After All

Sony Discontinues the PlayStation Vita, Its Least Successful Console

Here's What A Modern PlayStation Portable Could Look Like