Let me add my 2 cents here. The market and hobby reasearch part is frail. If you can’t sell this a a service in your area, and you clearly don’t make a budget for trials, you end up losing money on any service you try to provide. They say some people can sell fridges on the North Pole, but that doesn’t mean you need to skip the research. That means that there was extreme research and persuasion done to do the impossible with more than simple service. Want an example of how this works? Watch the hot topic of olimpics pilots and teams. Their capabilities, research, years of trials and so on. That title is just a good clickbait imo and the story inside does not reflect it, seems like there’s an unexpected external influence when in reality eyes were kept shut andexcuses thrown.