As for your question, the answer is simple economics. IBM PCs were VERY expensive and the clone manufacturers (mostly Compaq who nearly sent IBM to bankruptcy after winning a lawsuit over the reverse engineering of the IBM BIOS) were able to release...
The RTX 3090 launched at the height of the GPU shortage at $1,500, so it’s only $100 cheaper than the RTX 4090. Considering that you’re getting up to 90% faster performance, the RTX 4090 is expensive, but actually worth the price. But then, there’s the RTX 3090 Ti with its $...