It's copy protected well the PAL version is, so you have burned 8 to 10 copy protected discs without having the copy protection cracked... oops
It's LibCrypt protection to be exact that does let you boot a game but will only let you get so far before it either freezes or it can prevent you from progressing by just endlessly looping certain area's or it can even prevent items showing up that are vital to completing a game.
Personly I would verify my images before burning, but up to you
the following are just to verify your copy
http://redump.org/disc/355/ for Wip3out PAL (this is the version that has copy protection and requires patching to work)
http://redump.org/disc/5732/ for WipEout 3 NTSC (I'm sure there is no copy protection in this version)
http://redump.org/disc/937/ for WipEout 3: Special Edition PAL (No copy protection here)
We have WipEout 3: Special Edition at http://www.emuparadise.me/Sony_Plays..._%28E%29/52529
A good copy protection list can be found at http://www.reocities.com/timessquare/dragon/3926/