The solution is simple: don't buy a PSP Go. There really aren't any technical reasons to buy a Go. The screen is smaller, it's harder to hold on to, the buttons are closer together, it has a mechanical slide that can fail, and it's more expensive. Not to mention that you can download and play games from PSN on a standard PSP.
I think you really hit the nail on the head here. There is a pretty big market for reselling used games. With the PSP Go, not only are you restricted from reselling your used games but you are also locked into purchasing them from Sony's download service.
Ars Technica published an excellent review on the PSP Go and why you should just stick with the standard PSP 3000.
On a different but related note I have a relative who, when he inspected a house he was buying would hide items which he wanted to own, then retrieve them after taking the place over.
Wow. Thanks for the heads-up. I'll be sure to pay close attention when I go to list my house.
New York... when civilization falls apart, remember, we were way ahead of you. - David Letterman