You may not have ownership of the company but you can have ownership within the scope of your work. For instance, as a developer there are so many areas which involve decision making from code design, testability, reliability, observability, choice of tooling, non-functional roadmap, documentation and onboarding etc. Of course, working within an organizational framework, you may not have infinite degrees of freedom across these, but if you don't have at least a handful of degrees of freedom in what you do, then you depend on somebody to tell you exactly what needs to be done all the time and your work will not be very interesting.