The smaller the PC market gets they less investment goes into it.
Here's the problem, PC experience is amazing on the high end, with SSD PC boots in seconds and on a 34 inch 1440P monitor everything is amazing. But MOST people are not in that area, most people buy PCs for $300-$400 and suffer with them and abandon the market.
Here's how i would resuscitate the PC market, if i am Intel i would have every new chip on the market support nothing but 1080P displays at a minimum as to get rid of everything below it. I would only support storage that boots in under 15 seconds. I would discontinue all support for any output that is older than HDMI. I would discontinue support for monitors that are smaller than 20 inches.
People would upgrade if they had issues accessing Facebook or Internet browser, maybe these tech companies can work with those to make browsers more feature rich to encourage people to buy more powerful hardware.