As I already replied to an adjacent comment, the execution includes designing in those network effects and maintaining/modifying them over time. It also include

As I already replied to an adjacent comment, the execution includes designing in those network effects and maintaining/modifying them over time. It also includes the moderation, marketing, operations, etc. It's literally everything beyond just the idea. Furthermore, in no way have I stated nor implied that I expect an alternative must be implemented by a single person. I think your least charitable interpretation of my comment is wildly silly.