I am not going to ever run an RTX 4090 for gaming, that's insane, the GPU takes too much power and your electricity bill will run dry faster gaming every month, right now I am still having some difficulty running my gaming desktop with RTX 3070Ti because with the CPU i7 11th gen it takes up to 350watt, running warzone 2.0 and CyberPunk 2077.
I am sure that if a person buys an expensive computer with the most powerful gaming graphics card in the world, then he will not worry about high electricity bills. When a product has no competitors, people will buy it. Enthusiasts learn to use this graphics card for various complex tasks that require professional Nvidia graphics cards, which are very expensive.