Are any EAs (or others) doing good work in corporate governance reform / changing incentive structures of large companies to create less harmful externalities, perhaps by de-prioritizing profit maximization for shareholders as a primary incentive structure?
My uneducated opinion is that efforts here, if tractable, could be hugely impactful, and there are alternate structures available that fix some problems (see steward ownership corporations).
Cultural values and context of any given company can be very important. For examples where there are counter-weights to profit maximization, you might find this exploration of community stakeholders that are a part of corporate culture in Japan interesting (this community-centeredness also contributes to the unique longevity of Japanese businesses).
When it comes to thinking about board and investment incentives, a nuance to consider is the difference between long-term profit maximization and short-term profits. Outputs of companies with long-term profit maximization seem more often aligned with social benefits than those of companies whose strategies are entirely based on quarter-to-quarter read-outs.
This is an area that I'm curious about and currently doing some independent research in - would love to connect and share thoughts.
I'm not an expert / don't have much capacity to invest in this right now, but other commenters here might! You should reach out