ps2 is still a product the makes money for sony's pocket, so you can see way...
Yep, that's why. PS2 is the best-selling console ever made.
BC was removed to promote sales on PS3 software and accessories. PS2 is still selling so well.
I think one of the top reasons why Sony blocked RSX in Linux is to prevent anyone to develop or use a Linux-based PS2 Emulator and any types of Piracy and other things.