It isn't really a compiler speed issue. There are some environments, mostly BSD to my knowledge, that support installing from sources. However, in my experience

It isn't really a compiler speed issue. There are some environments, mostly BSD to my knowledge, that support installing from sources. However, in my experience with Linux distros, wrangling multiple build tools, etc means that it is rare for make config; make build; sudo make install to work without having to sort out dependencies and versioning issues. Not only that, I would like to see OS install to profile the hardware and then automagically recompile for that specific hardware. As I understand it: Linux probes for hundreds of potential devices only to load perhaps a dozen or so. I don't know how many device drivers are actually integrated into the kernel. Probably far more than is really necessary. But I'm rapidly getting out of my depth here.