Based on previous reading (I will try to find the source) - there are numerous settlements between media companies in the U.S. and people who have sued them each year. Most we never hear about since they involve business people or non-entertainment people. The media companies and their insurers find it easier to settle than pay legal costs for a protracted period of time. I expect most settlements are small - more like low 5 figure than 7 figure.
Even with the Sandmann settlement I don't see major media companies changing their ways - they simply view these settlements as a cost of doing business. I don't think their premiums will skyrocket to a level that forces them to thing about changing anything.
There's also the fact they did nothing wrong as can be seen by the statement on the settlement agreement