Only kids and other non-techies like Nvidia. Us developers know well how corrupt and bad Nvidia is. And we know really well that most of the tech press is corrupted and bribed, and always tries to place Nvidia on top. Whenever Nvidia's stuff are better on a single thing, this single thing becomes the focus of everyone. But when the competition overcomes Nvidia on their own game, somehow this single thing is not important anymore, and we go to the next Nvidia gimmick... Aside from being a developer, i am a PC gamer for decades, have used a really big variety of hardware over the years, and i know people with an even bigger variety. Nvidia sucks. Their hardware never performs like their reviews suggest in the real world. I have personaly tested it many times.
Also, remember (or google) the bumpgate scandal, or the Crysis 2 tesselation, or the recent 970 one. Try to understand deeply what happened and this company's actions, and see for yourself if you like this kind of companies around. Hint: They are not pro-consumer in the slightest... They actively hurt consumers...
As for the PSP, i believe the PSP hardware wise was great. Really great. I own one. I never complained about the hardware...
Its game library? LOL. JUST LOL. Hint No2: This thing sold because it was easy to pirate and use mainly for things other than games. Actually, many people used it for movies on the go or music much more frequently than actual games. I am willing to bet this thing has been used much more for emulators than native games. Just go to here:
http://www.vgchartz.com/gamedb/?name=&publisher=&platform=PSP&genre=&minSales=0&results=200
For a console that sold almost 81million + 10million from the Vita, game sales are pretty poor. Aside from a few outliers, sale numbers are abysmall. And no, the reason is not piracy by itself. Piracy was a thing for the DS and the 3DS as well. Actually it was easier to pirate those than the PSP, for a long time.
The reason games weren't sold that much was because they weren't attractive. Now come at me PSP fanatics
PS: Sorry for the offtopic, but since it was mentioned...