And you argue "If companies care about maximizing productivity and profits, and given America's hyper-competitive economy and super-fickle stock market where the difference between meeting the earnings estimate versus missing it by a penny can make the difference between a stock being up 10% or down 10%, why would a company waste money on jobs that are bullshit"
This is the same argument, just with a different spin. In the instance of Facebook, it was able to provide it's core utility with some software cobbled together by one guy in his dorm room over a couple weeks. So what are the other 25,000 employees for? It's not to make Facebook more useful, it's to prevent some other college kid from building a social media network that displaces it. It's all just a silly game that isn't very fun to play. One could argue that Facebook's core utility is now in delivering ads, but nobody likes looking at ads, and companies would rather not spend on ads if they didn't need to to compete, so again, it's all just a silly game. Very little of it is doing anything that is either useful or wanted.
IE, vast amounts of effort from major globalcorps is dedicated towards tax avoidance. You spend tremendous amounts of resources to avoid taxes, which is only beneficial to the shareholders in the short term, because the long term economic damage of tax fraud and avoidance cripples economies and stunts growth. But the stockholders need not care since they already made their dividends off all the smuggled money as the country burns around them.
Also, growing from a lean company into a too-big-to-fail behemoth (which happens all the time) is very valuable to CEOs & co. It what makes you graduate from billionaire to billionaire with political power.
Check this article out: http://evonomics.com/why-capitalism-creates-pointless-jobs-d...
Picture a stereotypical manager who does nothing but attend pointless meetings all day. (S)he attends reliably, and is good at appearing busy and authoritative and otherwise managerial.
This manager will not be fired, as (s)he's outwardly doing work duties and not doing anything specifically incompetent or negligent.
Other management-layer folk like this person as they confirm to middle class white collar norms socially.
Nevertheless, this person is useless. Every company is full of people like this.