[Vinnl]

> The only people who have an incentive are people banned from the incumbent.

Other groups might be people who feel harassed by people who aren't banned from the incumbent. For example, I think Mastodon saw early large influxes of LGBT users who were getting tired of Twitter's lack of moderation.

(Though of course, Mastodon has seen other influxes as well that might have helped it get over a specific niche - IIRC many Japanese who had different ideas about what is tolerable than Western platforms, and of course techies enthusiastic about federation.)