I'm fine with there being a vibrant ecosystem of open source OSes, each providing a different choice regarding the UX or other aspect I want to prioritize. The monopolistic gorilla is there but the only really effect it has is that other commercial developers like to only support the monopolistic gorilla.
My interest in commercial OS es is on the support/ contracting parts. For instance if tomorrow Sony wants to make a non Windows VAIO machine and look for a partner with an OEM program, open source OSes are out of the picture.
They could take a LTS somewhere, pay another specialized company for additional expertise, but the would be no way to have an actual contract with the leading entity, and have any weight on the direction the OS will be developped (MS is also bigger than any single OEM, but they will still try to keep the majority of OEMs happy and not pull the rug under their feet. Ubuntu for instance doesn’t have such strong incentives)
