Without a doubt these kind of situations will continue to happen whether they be negligent third-party care for children or adults. If the cause is shoddy State oversight, irresponsible care operators or unreported and disregarded care standards then closer regulation and stricter accountability is indeed in order.
But I'll dare venture into a bigger question that many may be too afraid to broach : Why would any responsible parent turn over their 4 month child to a stranger? Why would any responsible parent trade the critical early nurturing care and safety of their 4 month infant in order to return to work?
I am sympathetic to this couple's tragedy but an inward examination of their share of responsibility is in order.