If the market for initial public offerings recovers in the new year, one company that aims to go public early on is Reddit. An IPO will put the spotlight on the prospects for Reddit’s advertising business, which has fallen short of ambitious growth targetsoutlined by executives two years ago. ...
To elaborate: what Reddit did this year wasn't enough for a (major) mass migration. I very much doubt even more ads will deter those that have stuck around so far. Perhaps there'll be a trickle, but I don't see anything happening like what was the case for Digg back in the day.
Smaller instance admins are ready for defederating big websites in the event of adopting ActivityPub. Bluesky server owners should have the power to filter out content and defederate from other servers.