Is it highly likely that, those at high position of management are more greedy of money and posses less ethics and values, than those who actually build the company ie engineers ?

I had seen, it's always the top management who get away from mistakes/ issues but generally it's those who develop the company at core i.e. engineers again, are sidelined or considered responsible for the mistake, when management don't know a shit about anything, or sometimes engineers just follow what management says and management fucks their asses wide even if the management did something wrong.

Who do you think actually build companies/product. Engineers or management or marketers/sales people, who eats fat cheques ??

I remember from silicon valley, when hooli reverse engineered Richards idea and developed their own prototype named Nucleus. Pushed their engineers to beat pipe Piper and when their product turns out to be awfully terrible and extremely fucked like a burned dick with broken balls, they just fired their entire nucleus division