Scripting languages are really good for fast prototyping which helps in reducing the time to market which is critical for startups. When they go big, usually th

Scripting languages are really good for fast prototyping which helps in reducing the time to market which is critical for startups. When they go big, usually their codebase also goes bigger. Then they will start looking into maintainability, performance and 'ability to refactor' aspect of codebase. Statically typed language shines here and hence the move.