I'm not saying you are not there to support them, I'm saying you can do so from overseas you wouldn't have to be there in person. Whether you have someone managing it for you or whether you are available via phone and video it makes no real odds.
Let's take an example from last winter. One of the guys called me - he'd had to stop working because he had a problem with both pumps. I drove out to meet him and tried pretty much everything over the space of maybe two hours. Calibration, check battery, check for airlocks, get it working then it stops again, water everywhere, soaked and slogging hard work inside the back of the van, freezing outside the van, sweating inside with the work. I eventually replaced every single piece of tubing between pump and reel and realised it was the elbow into the reel. He got back to earning money and finished the day later but with his income intact. That weekend I went and repaired all the bodging I'd done to get him restarted.
I can't see how it could be diagnosed remotely and, frankly, why the franchisee (doing all the work himself, soaked and freezing in the back of his van while you sit in the sun asking him to point his camera into the darkness while telling him to go down a series of dead ends) wouldn't just say "stuff it, I'm doing all the work here, why am I paying for his services?"
Vin