

Was that in 2000? My own vague memory was that Linux started picking up some steam in the early 2000’s and then branched out to a new audience shortly after Firefox and Ubuntu hit the scene around 2004, and actually saw some adoption when Windows XP’s poor security and Windows Vista’s poor hardware support started breaking things.
So depending on the year, you could both be right.
Yeah, that’s why all the IBM clones had to write their BIOS firmware in clean room implementations of new software that implemented the same functionality as IBM’s own documentation described.
Functionality can’t be copyrighted, but code can be. So the easiest way to prove that you made something without the copyrighted code is to mimic the functionality through your own implementation, not by transforming the existing copyrighted code, through decompilation or anything like that.