> So to answer your question: they would be forking Atom (which I think would’ve won otherwise).

Atom was far slower than VS Code, despite both of them being built on Electron. I wouldn't have used Atom, but I use VS Code.

It is entirely possible that some other closed-source editor with a superior package/extension system would have won, or the "war" would have been postponed until Rust was ready enough for Zed to come along.