I'm very much of the opinion that PS3's linux support massively delayed its exploitation. And not just because it provided a path for homebrew/linux.

A lot of the early hacking focused on trying to breach the hypervisor from otheros. The hypervisor turned out to be quite secure, people smashed their heads against it for years until it finally fell to a memory glitching attack.

But turns out it was so much easier to just attack gameos with a USB exploit. The hypervisor did nothing to prevent it, and would then just decrypt games for you (because gameos was trusted)