It has. In fact the current ensemble of OSs/kernels (Linux/BSDs/Windows/macOS) are pretty much DoA. They have far too much legacy decisions holding them back and the SOLE reason they were used was because rolling your own kernel _per project_ took too much time. With agentic development this has changed, anyone can now roll their own kernel that is a) faster and more optimized b) more secure c) more obscure than the current offerings [important because it makes reverse engineering harder].