Can you do it first, fastest, best, most inexpensively, and with massive volume?  If so, you need a lot of followers.  This model is repeatable and hard to defend.  However, if you are willing to be precise and purposeful, you need fewer people in your tribe.  Actually, you may need just a few.  Artists have succeeded because just one person decided to start collecting their work.  That person’s passion brought a few more people.  In reality a dozen collectors created a market.

Are you seeking everybody or just a few?