What happens when the best interest of the shareholders actively harm the public or the community? I used PG&E as an example but telecom companies have accepted

What happens when the best interest of the shareholders actively harm the public or the community? I used PG&E as an example but telecom companies have accepted government grants to improve their infrastructure but they end up not doing any of it. Our government doesn’t seem to care about these things either, as PG&E continues to not face any consequences and I can’t take my business elsewhere as there are no other energy companies. I rent so I don’t have the option of going off the grid either. My parent comment got downvoted but I don’t know why - just because you disagree with me doesn’t mean it’s grounds for downvoting, as I’m only trying to facilitate a discussion. I think some regulations and enforcement is sorely lacking in these areas.