To your second paragraph…
Big orgs (regardless of public or private) can exploit economies of scale, which makes cheap products possible and available to the masses.
Big orgs have big org problems that small orgs don’t (HR, Legal, Architecture, …), so they need specialist senior leaders who spend their days doing things that rank-and-file staff don’t understand, and usually don’t even know need to be done.
HN loves to rag on the C-suite, but they are real jobs that need real skills. To all the armchair CxOs confident that boards are idiots and are paying their execs for nothing, all I can say is: try it.