I think it depends. If the behavior they were fined for was strategically useful to the company, then they will definitely think “it’s only half a million” and

I think it depends. If the behavior they were fined for was strategically useful to the company, then they will definitely think “it’s only half a million” and keep doing it unless they think the fine will be much larger next time. If it was just a fuck-up, then what you're describing will happen.