When I first started down this path my first red flag appeared when I started asking poly people how long they'd been poly. The first 30 people I asked over a period of about 4 months, the longest anyone had been poly was 14 months. It wasn't until I got involved in a smaller alt-art community that I found a few old timers with more than 5 years under their belts, and all of them were solo poly (they live alone, unmarried, but date multiple people).