I don&#x27;t see the problem. If you get so far and then need to do something else, only then is the time to start worrying about doing something else. Until that point the focus should be on shipping a quality product that satisfies a need. Do that well enough and you will be in a position to start worrying about using better languages for certain problems. Almost every tech company that is slightly mature has multiple languages in production anyhow and they got there because they built stuff and shipped it.