Custom OS is not about what is in it but all about what is left out. Custom OS for appliances that only has in it what is actually necessary for that appliance
Your mouth to Microsoft and Apple's ears. I want an OS that does nothing but run my programs and stay out of my way. I can get my own browser thanks.
If y'all could just get Linux to run current AAA games, and some professional music & audio software, I'd never spend another nickel with Microsoft or Apple.