There’s am awful lot of medium size companies staffed by regular every day people for every fat cat evil corporate overlord.

The only reason that medium sized company exists is because it hasn’t yet had the opportunity to grow into a behemoth, or it hasn’t yet been taken over by one. But that’s the goal of every firm, small, medium, or large: ever increasing profits, over all else, even over human well being. Some firms are just better at achieving that goal, often because they were first into an industry. These massive corporations didn’t start out massive, they grew from much smaller firms. The executives at giant corporations aren’t exceptionally evil, they’ve just demonstrated enough acumen for increasing profits to catch the eye of some giant corporation’s board chair (that and maybe they both went to the same business school and play golf together). And since ever increasing profits is the goal of every firm, every firm has to try and capture as many markets as possible, and that means the small and medium sized firms will be captured eventually, unless they are able to grow into a massive corporation themselves.