Compare to social media games like Farmville - most people might spend money they personally consider excessive, but that balances out with some other forms of entertainment. Meanwhile I've heard they had people spending upwards of $10k PER MONTH. Enough so that it wasn't "that one weirdo".

So while the "average" owner might have 1-3 guns (in this case), and the average "fanatic" might have 5-10, you have enough obsessives to throw things off.

(Carefully does not look at bookshelf with literal hundreds of RPGs)