Even if there are no real "world leaders", there are for shure too many too rich people compared to the rest. These guys claim the leadership against each other and in order to gain more power they fight. The problem is that any control over someone else imbalances the power and grows the damage of a conflict. So these "fights" are calles wars an the Damage is huge... And there comes money and governments into play...

So i see the only stable solution truely is anarchy with one problem.
Unfortunalely the way to get there ist bloody. Just because people refuse to think an act for themselves, and these people have to go...
Today these people fight for the military, collect taxes, and so on. In a brighter future such people hopefully just arent raised.

It seems harsh, but i really think the only Laws that should exist are natural law (philosophical) and Physical Law for individuals which dont get the first one.

Check out Mark Passio:
https://www.youtube.com/channel/UCTqcKb3T1QVbOHT8LIFs3xg
Really great information to straighten your worldview...