That heavily depends on the definition of "beaten", and also what "open source kernels" actually means in context. A compatibility layer means little, consideri

That heavily depends on the definition of "beaten", and also what "open source kernels" actually means in context. A compatibility layer means little, considering Linux has had a Windows compatibility layer far longer than vice versa. And does an open source kernel matter much when the userland is closed source and proprietary? Or when the apps are closed source and proprietary? Or when computing shifts to a closed source and proprietary Internet environment?