New languages lack most of what is needed to be highly productive. Tooling is minimal to none. Libraries are sparse and still catching up, this takes many years

New languages lack most of what is needed to be highly productive. Tooling is minimal to none. Libraries are sparse and still catching up, this takes many years. Many gotchas remain undiscovered and will bite you in production. To get actual product work done with optimal efficiency, a mature ecosystem will always win.