Microkernels are now competing with hypervisors, for the honor of providing added security and robustness boundaries to hedge against large attack surfaces in m

Microkernels are now competing with hypervisors, for the honor of providing added security and robustness boundaries to hedge against large attack surfaces in monolithic kernels. Hypervisors enable incremental change in this direction. Historically this has usually been a big competitive advantage. Qubes OS is the hypervisor department's version of the "compartmentalize OS for security" idea. The microkernel dept should come with their own credible version if they want to win.