Second, a profit margin will take into account risk. So for the ski resort or the furniture store that includes the overhead of keeping the store open while you have no customers.
Third, if the risk is so insanely high why are these firms so consistently profitable? Shouldn't we expect to see them coming in and out of existence regularly? Restaurants are a truly high risk business venture, the majority fail to exist after the first year. Perhaps they have longer runways but it's rare to hear of an insurance firm shutting its doors. The large and consistent profit seen on their end of year reports belies the risk claim.