Remember, the problem of violent organized crime has a solution, one Australia of all places should be familiar with: https://www.bloomberg.com/news/features/2024-02-02/el-salvad...
Prosecuting and imprisoning the criminals is a necessary (though not sufficient, I agree) component of this.
Is that all? Just a post scarcity society then?
You dont need authoritarian rule to have strong law enforcement. You just need sensible laws and good funding for police enforcement.
You are right that power concentration must be avoided though, as that creates much stronger incentives for corruption. More distributed power structures make bribery much more expensive and logistically difficult.