Not really good news
I just hope this isn't the beginning of the end for standardized, open computer systems anyone can assemble from their choice of components, topped off with an operating system of their choice.
As for reliability concerns: Since ASUS started making boards with beefed up, high-end voltage-regulation components, I haven't had any problems.
I never turn off my system. Windows uptime is often several months. So obviously, its reliable. And I don't just browse the internet and do spreadsheets, I use a large variety of applications, some of which use CUDA, also digital audio recording and other content creation software.
I'm not trying to advertise ASUS, but I stopped buying intel mainboards after some glitchy boards in the early 90's, when I used to be in the business, and most the alternatives of the day are all history now.
As for the PC sales decline, I think there are simply way too many 'good enough' computers owned by businesses and consumers. The benefit of new vs old is relatively small, so people buy sort-of computers they can carry around incessantly.