I seem to recall Linley Gwennap or someone at the Microprocessor Report saying that this was because these other industries were too different, in terms of R&D

I seem to recall Linley Gwennap or someone at the Microprocessor Report saying that this was because these other industries were too different, in terms of R&D requirements and margins, from Intel’s core business, making PC CPUs; none of these other businesses could ever produce the margins that Intel would need and none of them required the level of R&D that Intel could direct at them. This was when Intel was about to debut Larrabee.