My personal TL;DR from a couple of years ago if you don't have the time to read the book:
- It's very hard for prosecutors to secure a criminal conviction even in the most blatant cases of wrongdoing.
- Prosecutors care too much about their win rate to risk trials.
- Prosecutors have fallen into a trap where they're so dependent on the policy of offering generous non-prosecution or deferred-prosecution agreements if the company comes forward and volunteers evidence, they've become incapable of actually executing on a complex criminal investigation anymore.
- There's intense political pressure to not punish shareholders for management's misdeeds.
Rightly so, IMO. I invest almost exclusively in index funds, which means there's a good chance I'm a shareholder and don't even know it. I like to think that it wouldn't make sense for me to be held responsible.