Originally they had though as a means to foster indie development, instead people got to use it for emulation, thus PS3 Linux Other OS no longer supported graphics acceleration, and then was completly dropped in a firmware upgrade.
On the PS2, we had official Linux CDs from Sony, a hard drive, connection cables, and a whole development environment, a GL like API, another more low level console like, both with hardware acceleration (although the actual one used on the devkit wasn't exposed).