Jeff mentions selling two of his Groundmaster 4500s, but did not see him mention getting rid of anything else. I'd imagine they hung on to some fairway units, but am unsure.

I was proactive on continuing to add new turf Twitter profiles when suggested. Interest/activity naturally wanes for people, and when they stop posting, usually there is a new follow to supplement that loss on turf content.

Many use cases and only growing. The possible use cases will depend the type of cameras used on your drone. Processing times with the multispectral cameras and imagery will be a crux for someone doing it on their own.