Earlier quoted context omitted.
Are there any industries where high-end manufacturing doesn't subsidize low-end and low-middle products substantially? Are we saying this all started to unravel when most of the money moved to mobile and Intel still, after 20 years of warning shots, didn't have a compelling strategy there?
For Intel I think ~90% of the PC market plus ~90% of the server market provides enough volume to easily cover their R&D. The rest of the industry may have needed to pivot to mobile to fill their fabs but that's not Intel's problem.
Back in the day before the electric grid really caught on, hydro- and coal-powered electric generators could be found in businesses large and small that had needs that went well beyond the limited voltage and amperage requirements of the meager electrified buildings at the time. It made sense for a business to have its own power plant engineering department to just feed and maintain the beasties if the productivity from thirsty electrically-powered machines far outweighed the enormous cost of an in-house power plant, consumables and staffing. As the grid evolved though, this need went away, and only really heavy industry these days exceed the delivery capabilities of the grid will run their own on-site power plant (more often they just try to "peer" co-locate next to a "real" power plant, kind of like HFT's with exchanges). Power plant manufacturing is now a heavily-specialized industry with margins much lower than Intel has become accustomed to.
Could the "grid" of the Net, cloud and mobile devices evolve to the point where the existing PC and server markets retreats in relative scale into "heavy industrial" applications like cloud infrastructure, and shift out Intel's cash flow from under them? Under such a scenario, the PC and server markets don't shrink as much as grow dramatically slower on a relative basis to B2C-grade gear and infrastructure that explodes in growth comparatively. Intel will still be plenty profitable if well-run, and still be mighty, but won't grab all the headlines, and evolve into a GE-like "mainstream" business.