This is weird corporate monopolist thinking, and it's a fucking mind virus. Lemmy doesn't need to be beaten. The Fediverse is fundamentally a cooperative exercise, and deciding that some other piece of software needs to be crushed to dust is not healthy for that exercise.
You're just ignoring the realities of network effects and crowd psychology.
Take one network and divide it into 4 different networks and the results produced will be less than 1/4. You know what's great? Common decentralized standards. You know what's not great? A community that's fragmented and impossible to find.