Comment by gls2ro

There is almost nobody in startup world that will put the failure of a product/startup to choosing a dynamic language. Probably there are some exceptions where it matters but very few to count and in those cases yes use the most performant strongly typed, with string tools for static analysis and performance optimisations.

The real truth is that language preference (typed or dynamic) are more of a fashion choice in most companies where I was present than a pure technical consideration.

if you build your product by accumulating technical debt without any focus and effort toward simplicity and trying to make it do anything then the solution after many years is rewriting. But if you have the same culture and keep the same customers you will be in the sample place where you have started but now having different category of problems (eg network latency vs N+1s).

Maybe this is the "way of the startup" but lets not pretend that types can fix culture, engineering practices or product vision and good customer management.