I'd like to add to this; I believe it's more based in the fear of the unknown. People are generally very resistant to change, good or bad, "better the devil you know" and so on.

That's why some people stay in abusive relationships, dysfunctional families and lousy corporations.

Sometimes resisting change in a community, a startup or organization is more a case of very strong risk-aversion than anything else.

Same with products, most people say that their favorite brand of a consumer product is what they're currently using, this is why telco's incentivizes switching carriers, because people stick around...