Earlier quoted context omitted.
Or a desktop with 64 GB of RAM and two previous generation GPUs
64 GB? From where? I just looked at Dell and an XPS desktop with 16 GB of RAM starts at $650. You aren't going to be able to add two GPUs and a monitor for $350. At HP you can get to 32 GB for $650 but again you still need to buy GPUs and a monitor.
If you stay out of vertical integrated supply chains you can buy the best your budget allows
If you are saying that you cannot assemble a laptop of the same quality of an Apple one, I agree
If you are saying that Apple laptops are what people want because they consume 20 watt full load, I disagree
The market of the good enough products is always gonna be larger than 'the best money can buy'
Apple will never make 'good enough products' hence they are not competing with the bulk of what is being sold right now
It could change in the future, but not in the immediate future IMO