When I read the headline I thought maybe they were going to use them on their space probes, so the probes would keep going faster and faster as they head out to the planets!
But seriously, isn't it more likely they need a 3rd party, very careful code review? It seems like interference would depend on engine type (strange parts in the engine causing interference) and throttle control chip manufacturer, which would cross company brands. Whereas a software problem could be caused by common code, shared across different model types within the same brand.