The entirety of twitter is too large to just lift and shift to mastodon - absolutely correct. There are also slightly different social norms and styles of disc

The entirety of twitter is too large to just lift and shift to mastodon - absolutely correct. There are also slightly different social norms and styles of discovery. However, communities and professions have already moved and will continue to move. Things like Black Twitter ( https://en.wikipedia.org/wiki/Black_Twitter https://en.wikipedia.org/wiki/Black_Twitter and https://blacktwitter.io/about https://blacktwitter.io/about ) or Energy Twitter ( https://twitter.com/hashtag/energytwitter https://twitter.com/hashtag/energytwitter and https://mastodon.energy/explore https://mastodon.energy/explore ) are examples of communities that previously existed solely on twitter starting a migration. This isn't about platforms but rather communities - and these things are "sticky". It's hard to get a community to move off a platform, but once it does move, it makes it hard to keep the remaining people as the pull to the new platform becomes stronger and stronger.