Because Typescript is one of the best languages we have today and has major advantages over all others mentioned? I write (or have written, in the case of Go)

Because Typescript is one of the best languages we have today and has major advantages over all others mentioned? I write (or have written, in the case of Go) all 4 professionally. - a vast ecosystem all based on async IO, sidestepping the colored function problem, as opposed to the clusterfuck that is Python’s asyncio ecosystem - a powerful and expressive structural typing system that allows you to make illegal states unrepresentable in many cases, similar to Rust, as opposed to the language of interface{} and if err != nil - I feel silly comparing it to Rust because the Venn diagram of what problems these 2 languages are appropriate for looks like 2 disjoint circles to me. Yes, technically you could write your backends in Rust, and your competitor using Node will launch their MVP 2 years before you do.