It's upsetting, isn't it? I don't have the same expectations - for me I'm fairly happy with Roadsafe for the minor stuff. Their purpose is to send letters to educate drivers so that they improve future behaviour, and for me personally their purpose is nothing more than to get the video link to the driver so they realise their rego is indexed in Google and their behaviour is not anonymous, but their shame is public. I've a playlist of videos where drivers have purportedly commented on their videos, or I've had a company response. I think it is having an effect, since most are clearly distressed to have their behaviour on YouTube and number plate in Google, possibly their company name if a liveried vehicle, and lots of usually negative comments from YouTube commentors.
I have another playlist for repeat customers. Some improve dramatically, and some don't. My most recent repeat improved so much I even got a thank you for making their overtake easy after again holding them up through a pinch point. Admittedly this Smart sports car driver didn't get Roadsafed, I found his rego on a forum and PM'd him.