I think Threads federation may actually help with. I’m trying to persuade a health body at the moment to switch from Twitter and to roll their own Mastodon instance, based on the fact that what they really want is the widget on the website, control of their data and the ability to reach people.

Twitter has already screwed the widget with the login/authentication requirements. If
Threads actually allows its users to see Mastodon posts, that’s a big old reachable audience.