I assure you that if you had used both quattro pro and lotus 1-2-3 you wouldn't be thinking that we're discussing the "murky and collaborative nature of creative work" - we're talking about imitation. Interface cloning and heavy borrowing of element layouts has a long and storied history in software design - look at any modern GUI and they all look much more similar than dissimilar. Is that the murky and collaborative nature of creative work? Hell no, it's people copying off of each other. And it's a good thing, unless you think it'd be a great idea to have to retrain everyone every time IT wanted to switch application providers (that used to be common).

Assuming you still disagree, I'd be curious about your opinion of non design issues. Do you think samba is bullshit for having reverse engineered the CIFS interface allowing non windows computers to share on corporate lans? How about various office applications that reverse engineered the file formats of various closed competitors to allow them to save and load the formats? Surely a lot of hard work went into designing CIFS or .xls, should that be off limits as well? If not, why is the location of buttons on a screen a bigger deal than the locations of bytes in a filehandle?