Depends on your idea and your plan of execution, I'd say. If your idea is to build a social network or similar community thingy where value is directly proport

Depends on your idea and your plan of execution, I'd say. If your idea is to build a social network or similar community thingy where value is directly proportional to how many people use it and your monetizing strategy is to get big enough to make money off of advertising, then you should pivot your idea. On the other hand, if your idea is to provide a service or product that has value even if only 1 person ever use it (e.g. you file out people's tax forms with 1 click of a button, you host adult fetish videos, you write funny stories, you make ridiculous little wooden figurines of LoL / Dota characters, you make low-calorie edible women's undergarments for men, etc.), then you should keep at it.