Why is EPIC not developing the very own C++ dedicated compiler for UE

According to my system spec, I even don’t need any of the third party accelerators to fast compile.
I have ASUS ROG STRIX GeForce RTX 3060 Ti i7 + 32GB Ram 500gb/SSD
I recently realized that Visual Studio is not using the full power of the CPU because it needs Incredibuild, this is very funny having an RTX 3060 +i7 + 32GB Ram + SSD will not help Visual Studio to make the build faster while CodeBlocks has a Plugin can use even GPU to make the compilation super faster.
The Question is why Visual studio not using the full CPU power on the first place and the GPU power will be the next question after getting answer to this question. :grinning: