PS3 was a console at $599.
Only because it had expensive ass tech in it.
blu-ray was new at the time and drives weren't cheap
cell was a completely new chip they developed
wifi was in it and wasn't cheap at the time
gpu from nvidia
that rambus xdr ram
throw in add ins like the ps2 emotion engine for BC, card reader, usb ports... the ps3 had a lot of high tech in it that wasn't cheap at all.
There's nothing special about Scorpio or the ps4 pro or xbone/ps4. It's why we got a $399 PS4 at launch that wasn't selling at a loss back in 2013. There's no need for a cpu chip and gpu chip this gen since they're both combined in the APU which reduces cost significantly. 6 TFLOPS of power means nothing. All that matters is the chip die size and yields and I doubt the chip is going to be a huge size since it's 14nm and most likely uses tiny jaguar cores.
$399 Scorpio 1TB, $499 2TB