Nonsense. There's no such thing as a "gravitational pull" that's all "frosting." If that were to be the case, you would see startups investing in Superbowl ads or sponsoring the Olympics. If it worked, there's enough VC money around to make it happen.

MAU metrics highly depend on retention, and the retention highly depends on PMF. If Twitter didn't have PMF, it wouldn't have retained such a huge global userbase.