Was it... uhm... Escom that released Workbench 3.0 and before? I know I ahve the full 6disk set on an AFCD somewhere..... I seem to remember it saying something about "released OS3.0 and before for free" in the magazine... Was Amiga Format with AFCD45, IIRC.
I wrote to MicroSoft to enquire about AmigaBASIC to be released for the handful of enthusiasts, they said "if anyone wants it, pay up" or something along those lines. But then, that's Redmond for you, innit?