It's only reality because people accept it. If we stop accepting it the reality can be changed. For example, for several hundred years many people accepted slavery and believed owning people was justifiable. When enough people decided not to accept that reality it was changed fairly quickly.
Practices can change, and it's nice to think that once we realized it was possible for "owning people" to not be a thing, we simply made it not a thing, but in fact mindsets can be the slowest to change.
Eradication of an evil social practice is not like invention of a science or technology. We invent the car or the computer, and 25 years later it's in every country on the planet. The Father of History mentions the ills of slavery, and 2500 years later we still haven't quite got this thing licked.
It can be similarly argued that the modern income/opportunity distribution owes its continues existence to the fact that enough people believe that it exists and is lawful.
> When you go too far up, abstraction-wise, you run out of oxygen. Sometimes smart thinkers just don’t know when to stop, and they create these absurd, all-encompassing, high-level pictures of the universe that are all good and fine, but don’t actually mean anything at all.
I'm using the word in that sense of "The reality is that I can't afford to buy a Ferrari"; it's (sadly) true, but it could change in the future.