Wrong. They offer no unique products or service. IRDistro does have an infrared camera but they also don't make all the components. FLIR and perhaps other companies offer similar products.
So, no, DSUS is nothing but a run of the mill drone reseller. They may also be able to sell their service, but there are planty of budding drone fliers these days.
And between the apparent lie about a ~$6m contract, and office snafus, and the Series C debacle, there is no reason to think this is a good investment. None.