I didn't quite get the point of this comment, there's no denying any of it, actually I wholeheartedly agree with you, but what I was saying wrt practicality of playing PSP games.

You can of course buy that device, but from personal experience the novelty doesn't last very long and then it just becomes just another device in the drawer graveyard. Also no one's really making new PSP games anymore? so the novelty of the PSP remains in its construction and the software; which becomes limiting as time goes on.

The joystick, buttons all tend to break or stick after 20 years, replacements may or may not be easy to come by for most, so it just makes more sense into building your own retro game device that supports PSP emulation among others.