I don't know man...I just built a new PC two years ago, the one it replaced was well over 7 years old and to be honest, I probably could've gotten away with just a GPU upgrade instead of the whole kit and kaboodle. My GPU, a GTX 970, was showing it's age badly, so I needed to upgrade and went to an RTX 2080S. Surprisingly my old i7 4790K CPU was not a problem, but since I wanted to build in a smaller case, I needed a new motherboard and decided to just build a completely new unit.
The downside to the PCMR is like you said... a new fairly high-end PC is going to run ~$2,000. So significantly more than a console. Also, if you want to build a PC in a one of the smaller mITX cases or an HTPC case so it looks nice in your entertainment setup, you'll have to pay a premium for the small components. I can see how for a lot of folks that this isn't the best solution; but for anyone whose hesitation is that they are worried about "building" a PC, it's really the modern equivalent of adult Legos. Absolutely no soldering, everything is plug and play and much like anything else in the world you would like to learn how to do, you can watch a 12-year-old kid on YouTube walk you through everything step by step.