My benchmark would be the XBox One X, which is perfectly capable of 4k 60 fps gaming with HDR and Atmos, try to get that stable running with any PC, good luck. That's 400 for the console and in total under 2000 if you need to get an additional OLED-TV and Atmos-enabled-speakerset, which are not exclusively gaming budget.
The only shortcoming there is the absence of fast current generation NVMe mass storage and RTX-enabled GPU.
Reasonable high end PC gaming is possible well below $2000 or even $1000, even $500 will get you decent performance for even casual competetive gameplay.
The priceyness of gaming rigs setups comes from the insane demand of getting an edge at 4k 120+fps in FPS-shooters. That bracket can't be conviced by any streaming services physical limitations for the next 10 year or so at least.