That would be fantastic. Is it even a remote possibility?
Wow. I can already smell my graphics card melting playing this
Is it possible to have that level of detail without a huge investment? Well, define "huge"...it really means very different things to different people. Some have no problem dropping $2000+ on a new system, and in that case I think I'd be very ticked off if the performance wasn't great. Some can only afford to scratch together a few hundred bucks over several years; it becomes a far greater challenge but isn't impossible.
There are a few things to consider. If we believe in published system requirements, they are actually somewhat conservative at the entry point for this sim. Here's what I found:
Microsoft Flight Simulator minimum specsCPU: Ryzen 3 1200 / Intel i5-4460
GPU: Radeon RX 570 / NVIDIA GTX 770
VRAM: 2GB
RAM: 8GB
HDD: 150GB
Bandwidth: 5 Mbps
Microsoft Flight Simulator recommended specsCPU: Ryzen 5 1500X / Intel i5-8400
GPU: Radeon RX 590 / Nvidia GTX 970
VRAM: 4GB
RAM: 16GB
HDD: 150GB
Bandwidth: 20 Mbps
Microsoft Flight Simulator ideal specsCPU: Ryzen 7 Pro 2700X / Intel i7-9800X
GPU: Radeon VII / Nvidia RTX 2080
VRAM: 8GB
RAM: 32GB
HDD: 150GB (SSD recommended)
Bandwidth: 50 Mbps
So...the minimum is an i5-4460/GTX770 setup, with 8G RAM. Most anyone already playing WOFF might be able to meet this requirement. A 3rd-gen i7 (like a 3770) and GTX780 will slightly exceed the minimum. Although it's important to recognize this is a 'minimum', systems like this can be had for around $500+.
Even the 'recommended' spec is only an i5-8400/GTX970. The 3rd-gen i7 in the prior example will fall back a bit by comparison, but it's an i7, and is still within ~82% of the i5-8400 specified for 'recommended'. A high-end 4th gen i7 is close to this level (like a 4790k, especially with a good overclock). Also, the GTX970 is a funny card; they have 4G of memory but there are known issues with using anything over 3.5G, which sets a kind of 'artificial limit' on memory usage. Otherwise, the 970 is a bit ahead of a 780, which has 3G (BTW 3G is more than enough for gaming at 1080p resolution). Systems like this can be found in the $700-1000 range.
The stated 'ideal' system is aimed at high performance, but is obviously going to be a lot more expensive (the CPU and GPU combined are currently ~$1400, and the balance of the system would likely run you up toward $2000+)
Now, there's plenty of room for debate about what exactly 'minimum requirements' means. For one, game developers sometimes under-specify, in an effort to sell more copies - but this often leads to a lot of disappointment among the users with low-end systems. Sometimes, developers lean toward the high-end, to make sure their published 'minimum' will actually perform reasonably. By turning down graphics options, and using lower resolution (1080 instead of 1440+, for example), the game can be 'playable' on conservative systems. "Playable", though, is also subjective...
Broadly and generally, 'playable' means a frame rate of at least 30FPS. That's what many consoles use, and isn't far from the rate that motion pictures still use. So 30FPS is playable, especially if it's stable; it can be fairly smooth if it's not bouncing around a lot. Obviously, a stable 60FPS would be better, but this is where you start running into more and more cost; as frame rate goes up, cost increases as well.
Whether a particular publisher under- or over-states system requirements on any given title is anyone's guess. And this game is still not released, so they could change. But, at least for now, that's what Microsoft says about system requirements, and that's what system requirements are for (at least in theory
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Also, the video (in the first post) was discussing 4k if I'm looking at it correctly; that would look very impressive for sure, but the cost to drive 4k at a high frame rate and refresh rate could put you well past $3000 and toward 4000 (by adding a 4k monitor with a high refresh rate, especially depending on the size). So, you obviously can't get that same level of performance for <$1000.
Hopefully that adds some perspective.