>>16
>and I have already started developing an operating system, do you think I can become rich if I monetize my OS?
The popularity of an operating system is influenced by the number, quality, and price of programs for it. An operating system for which there are few programs will not be able to compete, it simply will not be bought.
Moreover, creating an operating system, a modern, advanced operating system, is a collective endeavor. It's not a task for a single individual, not a tast for a mortal.