> Meanwhile, the only PCs I know of that survive time quite as well
Nah, everything works forever, it's just that no one cares. My younger child retired a 3770K Ivy Bridge box last year that I'd bought at or near release in 2012, so ~11 years of steady use.
People fetishize Apple hardware, but the truth is that modern electronics manufacturing is bulletproof up and down the assembly lines.
The ICs, yeah. Not so much power supplies, screens, etc. I've had the former go up in flames and the later delaminate - my current laptop has small bubbles around the edges of the screen.
I've also had high wattage GPUs inexplicably fail and lost a few SSDs to unexpected catastrophic failure. TBF I haven't lost any halfway decent SSDs within the past 5 years.
I don't think I've ever lost a motherboard, CPU, or RAM though. Even secondhand recycled data center stuff. It seems to just keep working forever.