Hanlon's razor is a wonderful principle, thanks for the lesson. The linked article's timeline explains why it didn't make its way into my 1970s Philosophy courses. Given Apple's history of bus choking, limiting memory in firmware and its underclocking of the IIsi in keeping the low end and mid-range down, I thought it stupid not to pose the question.Hanlon's razor applies here. In the absence of any evidence to the contrary, cock-up is more likely than conspiracy.
I'd be sure you're right given the evidence, but malice in this situation would be ascribed to marketing intent, not Firmware cock-up.
Sorry for the tangent.