That's why the default advice if you're looking for 'value' is to buy a gaming console to complement your laptop. Both will excel at their separate roles for a decade without requiring much in the way of upgrades.
The desktop pc market these days is a luxury 'prosumer' market that doesn't really care about value as much. It feels like we're going back to the late 90's, early 2000's.
That's the thing with macs, all the strategy games tend to release there because the market for mac users and strategy gamers is a circle.
Yeah sure, if you start buying unnecessary luxury cases, fans and custom water loops it can jump up high, but that's more for clueless rich kids or enthusiasts. So I wouldn't place pc gaming as an expensive hobby today, especially considering Nvidia money grubbing practices that won't stay forever.
But they spend voriously. And so the desktop PC market is theirs and theirs alone.