(But, I've to admit, I still don't know what people were thinking, just how a few industry leaders reacted to this. – I was just a teenager, but, as I remember it, everything was coming to a stall as potential customers were waiting for what IBM would come up with. Then, there was some disappointment, but more importantly, after a small pause, "well, it's IBM, this is the industry standard, we'll go with this." At least, this is the impression I got from reading the magazines. I specifically remember arguments, like, this is not a great architecture for an office machine, but it may make sense for things like process control, it's meant to be a general machine.)