Fine them, and incentivize change for them and all other businesses in the space. Fines just clearly, demonstrably don't do that. Jail time for executives would, IMO.
The 10% and 10B might need to be extra high to account for hyperbolic discounting, but I think we could get there just by increasing those numbers. Shortening the time from gain and fine would also help. I don't think we can get it into a single-quarter cycle, but most CEOs don't want their company bankrupted five years down the line, either.
Imagine that. Forget the corporate veil, if you are invested heavily in a company you are financially enabling the harm they do. Maybe you should also be somewhat legally liable for the harm they do too