Every job I've ever had started great with a small team who was actually interested in the company and its goals. Then eventually the company scales up, gets acquired, or IPOs or some other sign of maturity and a new group of leadership is brought in from a legacy/Fortune 500 type of company. That new group of leadership brings their own cabal/clique and they only promote themselves and start slowly pushing out the original employees and workers who got the company to where it is... the smart people see what's going on and move on to other companies as it slowly becomes hijacked from within and at the same time 'matures' and becomes a slug and incapable of improving or adapting.