I don't think birdman29 is concerned, if you know him from prev...

I don't think birdman29 is concerned, if you know him from prev posts he finds info and post for your eyes. Most of us long holders agree with your points about the business and cannot see the 'high risk'. Of course US could fail but I think unlikely. The risk will evaporate when US revenue curve follow or outperforms what happened in Australia of which are early days but is showing promise of doing so.
You can give a lot of faith in disruptive businesses like nearmap. They have taken a fragmented old school market and transformed it into a quality product that stretches across many verticals and their low cost of data acquisition, fast processing and delivery, not to mention scalability. With competitive pricing providing a much better offering than was previously available. nearmap helps businesses succeed by providing a better product.