If the CEO's only concern is shareholder profit, crime usually pays pretty well.
We had one of these cases recently in my country.
CEO of one of the biggest X in the country goes to trial for lying/not informing correctly about Y gross malfeasance. Walks free after years of investigation, because didn't know about it.
Holding both companies and management responsible can be tricky as well. IIRC Exxon-Mobil had an aggressive policy of destroying records from projects as soon as they were legally able to prevent them from being used against the company in litigation or investigations. In this case, having poorly structured laws or regulations encouraged the company solve the problem of liability, rather than one of accountability.
If you get the big pay check for leadership it is your responsibility when shit goes bad. Sadly about the worst consequence a failed CEO has is that he/she doesn't get invited to play golf for a few years.
I think after taking down Enron and Arthur Andersen and lot of people lost their jobs, which does not look good on TV. Politicians on both sides stopped supporting taking down execs/companys. So now the new normal is to push for fines.