Excuse me for the dismissive tone, but this looks a dog chasing his tail. Does anyone REALLY believe that "things don't work"™ because the systems put in place are flawed? No sir, the systems in place work flawlessly for those who put them there, enjoy the benefits of those systems and make damn sure these systems keep benefiting them no matter what. As long as one doesn't acknowledge this very simple fact, they have…
I do. When society produces large-scale negative outcomes, I believe there are roughly four causes:
1. Because human groups are complex, interactive, iterative dynamical systems, the system as a whole may have emergent properties radically different from the intentions of any of its individual participants. No one in a crowd crush is deliberately commiting evil, yet the result is dead bodies. Designing large scale human systems with the desired emergent properties is extremely hard, like controlling the weather while also being a raindrop.
2. Since culture lives inside human brains and gets enshrined in physical artifacts, large scale systems change extremely slowly. Even when we (for some definition of "we") know better, there is a large lag before we can see the change.
3. Even well-intentioned people are fallible and make mistakes. Some level of power variation is useful, so you will inevitably sometimes have people in power who screw things up and whose position magnifies the negative consequences. This is particularly true when the consequences are long-term and hard to predict like leaded gasoline or CFCs.
4. Some people are selfish and willing to harm others for their benefit. A few are outright sociopaths. Some fraction of these will end up in positions of power.
Conventional wisdom is that these are in increasing order of importance and that most of the bad we see comes from megalomaniacal billionaires. I don't like those dudes either, but my belief is that this is actually in descending order. I think most of our problems are because the systems we're part of are just huge and unpredictable with emergent effects no one anticipated or wants. You can't really blame the problem all on evil billionaires because the production of billionaires is itself a property of the system.