Serving time for a purely corporate offence is very very rare. Health and safety negligence is most common, but even the horse war scandal in Europe (where unfit horses were sold as beef and then into ready meals) it's unlikely and people there committed fraud as part of course of business
That's a matter of prosecutorial discretion. The point is they can serve jail time. What's the point of changing the law so that they can be fined 100% of revenue. The same discretion will still apply.
