@chartier It might be because of the perceived "stability" and "safety" large for profit companies like Meta offers. Most people with their very short attention spans likely would probably use a new service from a company they trust, because they used another service from that same company and were satisfied. So why leave and learn about the awesome Fediverse and Mastodon, when you can just sign up for a threads account with your existing Instagram account and start tweeting right away.