A economy is but a subsystem to serve an organized society.
Not every society requires a economy, there are many ways to organize, the original foundational ideas go back to ancient greece. Read up about them.
The people with wealth and power have all the insensitive to keep things as they are. They own the planets resources, the means of productions. They loby or laws.
To think were waiting on one person to have “a better idea” for things to change is incredibly naive.
I don't know how the system will change how the next one will look but the current one is mathematically not sustainable for another century.