Insurers estimate of the population of gamers

In my quest to find data points on how many D&D players there are out there I stumbled upon this " The tabletop gamers’ survey " by Compare The Market - the general gist of which is "there are a lot of gamers out there, have you got insurance for all those out of print RPG books and precious, precious miniatures?" - which fair play, they are transparent in their angle in all of this, respect the…