The HDD-less PS3 would have to come with the USBs, so Sony would just be exchanging one cost (HDD) for another (USBs). Per GB, HDDs are far cheaper, so Sony would probably end up paying just the same amount, but giving their customers less storage in the process.
As Squilliam said, any USB good enough wouldn't save Sony much/anything, and would come at the cost of vastly lower storage.








