When I left Twitter and invited my friends here, nobody followed. Everyone was already at Twitter and there’s no reason to leave. Even 2-5 friends going some place is not enough. You need a good sized group of people you can relate to in order to stick around.
Most people here have the orange reason in common so it’s easy to stick around. Others are just in it for nostr, and many both.
Influencers can also take place of groups.