Alright, so I looked at the memory card of my PSP and I noticed that the SLUS folders were there for the PS1 games Ive bought and downloaded

Now Ive been thinking, wouldnt it be possible for me to copy these folders and put them on a friend's PSP's memory card and he could play them too?

And wouldn't it be possible to download those folders off the internet and simply insert them onto my memory card to play on my PSP?

That doesnt make sense to me, seems like a pretty easy way to get games for free

So there must be something stopping you from doing that

Or can you actually do what im saying?