It won't trickle down to the directors' salaries, so then there's no reason for them to act any differently in future.
Directors of companies should be personally financially liable for these types of penalties.
Not only that but this kind of behaviour is actively seen as necessary by them to maximize profits. Maximizing profits is in turn what shareholders want so everyone involved is going to continue doing this.
It's infantilizing to think it's harmful to give users control over their privacy because they are too stupid to understand what they are doing when they share their data with someone that it shares their personal data with someone.
Meta can take the hit by either selling stock, laying of more employees or both to cover that cost.
You need another one or two digits before you can say it is "not a small fine."