To really change anything is as easy as everyone no longer buying in to what currently exists. As an example, money only exists because we all agree it exists, regardless of whether or not it's fiat or gold standard. If everyone woke up tomorrow and was like **** money, let's just do good things for each other, things would be Star Trek pretty quickly, but the likelihood of that happening is ridiculously small even though we'd all be better for it. Similarly we could all decide that we won't buy cars that run on gasoline because that would force companies to stop doing the crap they do, but we generally do not.

Collectively we all have the power to change whatever we want to change, but for multitudes of reasons ranging from Season 3 of Orange is the New Black to being too worn out from work to have spare energy to hobbies like cycling that for whatever reason resonate more than making things good for people we've never met, we usually don't. Over a long enough period of time I'd argue things do change, I'll spare you the long Hegel ends of history rant, but I tend to think that we have the systems we have because they build off of the systems that were in place before, and eventually we'll move on to whatever is next the same way mercantilism gave way to capitalism, but not before all the things that have to be ready for it to happen are in place.

I try to keep in mind that we went from horses to moon rockets in like 70 years time, and now have the ability to basically telepathically communicate with each other because we figured out how to do crazy things with electricity. I would argue that as a species it takes time to realize what the crap this all means, our minds and systems haven't really caught up with the way things are because it's all happening so quickly.