For one thing, there is a reason that "The Professions" were standardized. At one point in history, there was way less regulation for a lot of professions. But then people had problems with insurance companies becoming insolvent and not actually being able to pay all claims when major disasters struck. This was because companies were hiring people that really didn't know how to do the math.

It also seems like it is also more common for actuaries, statisticians, Industrial Engineers to do independent consulting where they are employed as an independent professional and will be required to carry things like insurance. In cases like that, there really isn't any place that acts as "your employer". Instead, you are independently providing your services to a client.