Here you can see that even if I open an image viewer and a terminal, my VRAM usage is only 138 MB.
If I close the image viewer then the VRAM usage lowers to 135 MB. These seem like pretty good values for the Radeon RX 7600.
If I open a 3D shooter with outdated but decent graphics then I see 4xx MB of VRAM.
So I can play a fun 3D shooter with less than half of the typical windows10/11 users VRAM usage.
The most popular GPUs according to the steam hardware survey:
#1 RTX 3060 (has 8GB models)
#2 GTX 1650 (4GB VRAM)
#3 RTX 3060 Ti (has 8GB models)
#4 RTX 3070 (has 8GB models)
#5 RTX 4060 (has 8GB models)
#6 RTX 2060 (has 6GB models)
#7 RTX 4060 Laptop GPU
#8 GTX 1060 (has 6GB and 3GB models)
#9 RTX 3060 Laptop GPU
For 1080p gaming, 8GB is usually going to be enough for several more years.
Game developers can't even sell their game to the largest group of gamers otherwise.
Even 1080p gaming on 4GB VRAM GPUs still goes reasonably well if you are willing to tweak some settings or skip some games.