This solves nothing, the exact same people will just move to another company.

The only way to effectively stop this kind of behavior is with regulation. The following types of regulation can help curb this behavior:

1. Steep financial penalties for violations that are actually enforced. These need to be anchored directly to total value or profitability over a certain time frame. A specific number value will easily be outpaced by consolidation and gigantic companies can basically ignore them. Even a 100 million dollar fine can be ignored by companies the size of Amazon, Nvidia, and so forth. The EU has been good at architecting this kind of legislation.
2. Strong rewards for whistle blowing on criminal behavior. Note that this is not prosecution of individuals responsible for said behavior because it will be very difficult to prove this in court and utilizing simple information warfare tactics, folks can be glass cliffed, made into patsies, or otherwise obscured from any record of their involvement or require extreme in-depth investigations to figure out.
3. Strong criminal prosecution for repeat offenders and funding for real investigations of any company who has been found liable of any penalties or suspected of bad behavior. Some people hop from company to company doing the same thing over and over again. When we are focused on the companies rather than the people behind such bad behavior, they get a slap on the wrist at most and continue to do damage to society. We need to more aggressively profile and prosecute individuals with a track record of malicious behavior. As already mentioned, this is unfortunately the most difficult of the above to both legislate and enforce as what is considered "malicious" behavior is up for debate and difficult to quantify.