Every single thing you named aside from the PSPLet's see if your statement holds weight.
Gaming Peripherals? How many gaming peripherals have they produced.
PSP is a Portable Gaming Device 82 million units, launched in 2005, out of production 2014
PSVita is a Portable Gaming Device 12 million units, launched in 2011 still in production.
Peripheral
Playstation Eye Toy October 2003 for the PS2 games made for it til 2008 over 100 games
Playstation Eye October 2007 for the PS3 games made for it til 2012 over 80 games
Playstation MOVE Sept. 2010 to 2013 for the PS3 games made for it on the PS3 over 125 games
Playstation MOVE now a PSVR peripheral and seeing even more support.
So which Peripheral did sony abandon? This is a internet talking point, that I'm trying to understand.