I think the whole '8K gaming' hype has gotten to everyone, including those posting in the 3090 threads.
As Nvidia alluded to in their presentation slides, the flagship is RTX 3080, period.
RTX 3090 is targeted at a different segment of users:
1. Gamers that have 8K TV screens.
Quick check on Courts Website, the cheapest 8K TV costs S$6299 before promotion. People buying those kind of screens for gaming should have no issue ponying up the money for the RTX 3090. The probability of such gamers will be less than the probability of 8K TV ownership in the first place.
2. 3D Content creators
Animators, 3D VFX artists, etc. People that would traditionally depend on Quadros for their workload. RTX 3090 is sure cheaper than a Quadro RTX 6000. Even 3090 reviewers have already emphasized this point over and over again. Getting a 3090 over a Quadro merely loses certification, something that some content creators can do without.
3. AI/Machine Learning users
24GB VRAM. Something that used to appear only in the S$3700 RTX Titan. This 3090 is easily at least S$1000 cheaper and can load the same training datasets into VRAM. What is missing is probably the Titan drivers. But then, different training datasets may require different compute power, so mileage may vary.
4. Gamers on 4K/120Hz or 4K/144Hz screens
Next-tier performance over the 3080, with a huge price tag. More justified for multi-generational GPU upgrade (e.g. Maxwell or Pascal to Ampere). I'm still using my 980Ti on a 4K/120Hz panel (Acer XB273K), so I understand how it feels to be limited to only 4K/60Hz (DP1.2 limitation) when the panel can offer much more. Even then, upgrading to 3090 is a tough sell from a value perspective coz the 3080 will still be a more price-to-performance upgrade.
5. Users with loads of money
This one cannot be framed into a value proposition. Some just have too much, so no logic works.
For all other users, the RTX 3080 is a far better buy than an RTX 3090 for gaming at resolutions 4K and below. For those sitting on the fence on whether to buy the RTX 3090 or not, here's a litmus test: if buying an RTX Titan is not an issue, then buying an RTX 3090 shouldn't be either.