It's not "management and business". People will always tend to take as much as they can before someone fights back.
I don't think that's always the case. People can and do organise themselves in ways that prioritise collaboration over treating these sorts of things as a zero-sum game. Not all orgs have to function in this way.
If this is all you have experienced, then I urge you to look beyond your current circle (or bubble) to find people who genuinely care about others and want to improve the world.
Since most people tend to avoid confrontation, that gives the kinds of people who want to take as much as they can (or to have their way in some other way) a free pass until someone does in fact fight back.
Hence it's not surprising if, in the big picture, it seems like "people" (as in enough of them to make it a potential issue) do in fact seem to behave that way.