For a couple of reasons: * You need have a clean architecture, so starting "almost from scratch" * Knowledge about performance (for Rust and for build tools in

For a couple of reasons: * You need have a clean architecture, so starting "almost from scratch" * Knowledge about performance (for Rust and for build tools in general) is necessary * Enough reason to do so, lack of perf in competition and users feeling friction * Time and money (still have to pay bills, right?)