IMO Typescript will grow on the backend. It's mainly just not as mature as alternatives and will get better over time. There are small problems similar to python though, like module-level mutable global state. That interferes with certain tools and fast restarts, but can be mitigated the same way as is done in python, ie https://instagram-engineering.com/python-at-scale-strict-mod...

Go is not dynamic enough to build useful abstractions. It does not allow developers to make themselves more productive. It's also more difficult to build hot reloading and high quality reflection based debugging.