Lack of growth, lack of breadth of discussion topics, k00b selling to someone who doesn’t prioritize the same things he does, one territory becoming too successful (also ties into the lack of breadth), too many bots and sats farmers, invasive ads (a bit of ads/corporate sponsorship is inevitable but if all you see is ads like some forums it erodes experience), going non custodial being too much of a pain point for users, another v4v platform taking users away. I am sure there are a lot more but those are some. There are many ways SN or any business for that matter can fail. It’s good to be aware of them but not dwell on them. If you build a great product or service and keep your users/customers happy things will generally work out.