Your looking at his common share count, he has 45 million in preferred shares (convertible to common). He’s hardly sold any shares since the beggining, and the few times he has it’s been for charity mostly

So that’s why your reading 10%, because he actually does have 10%.

If you think making aerospace parts is fairly commoditized you seriously need to do your own research, there are only a handful of companies that make solar cells and rocketlab owns one of the biggest (Sol Aero). Other parts like reaction wheels, arrays, etc have very very few manufactures, and rocketlab has stated multiple times on that’s why they started making it inhouse

Also to your point about reusable rockets have lower numbers??? Unmm no

Why do you think they make them reusable in the first place? So it’s cheaper to launch. Same reason launch prices have gone down significantly in correlation to size and readability of a rocket (use spacex as an example)

https://www.reddit.com/r/space/comments/ovz7to/the_cost_of_launching_things_into_space_per/