That's only an argument that there are some cases where DMS is inappropriate, not that it's inappropriate for all cases. Considering that in general, setting up

That's only an argument that there are some cases where DMS is inappropriate, not that it's inappropriate for all cases. Considering that in general, setting up a robust Nagios install, configuring it, and maintaining it, costs far more than DMS, there are many scenarios where DMS is the rational choice.