Very simply, the response about Threads from @Gargron is impossibly naive. It assumes good faith interactions with a company that routinely demonstrates, and often flaunts it’s lack of ethics. There is no universe in which Mastodon gets Threads content for free. Either they’re going to find a way to monetize Mastodons userbase or they’re not going to implement interoperability.
You don’t build a milk empire by letting everyone have free access to the cows.