Make the fine so gobsmacking that it hurts them enough to the point where they seriously ponder wether they’ll ever recover from that.

Make the fine 60% of their annual global revenue.

Make the corporation, the moral entity, understand that allowing such practices will result in the moral equivalent of getting close to being mortally wounded when caught, or will be if they get hit again.

This is how they will stop.

Otherwise, a "10 million settlement" merely becomes the operating cost of doing "business".

Make the fine a percentage of voting stock for each infraction. Too many infractions and a perpetrator has voluntarily donated their organization to the country it violated.