Wealthy PC owners just chuck away their computers every few years when they stop working. They can afford to. They can also afford to spend a lot of time playing games instead of earning a living. Hence, the PC market sees so much high spec disposable stuff. Also, money doesn't buy taste. Which is why you see all the multicoloured LEDs and ugly keyboards.
A mate of mine bought a Mac. It does look pretty. But £3k for something to surf the web, listen to music and watch films on seems a bit much and is more than what I spent on a laptop that runs flight simulator 2020.