> there have been many languages whose success was specifically tied to the fact that they were dynamically typed
Language success does not mean product success. A language is just one of the many things in your toolbox. There's a reason why when many products grew larger, they all are migrating to statically/strictly typed languages.
Even if they don't just "turn off", why would I want to invest in a cloud platform that only staff enough to keep the lights on, while there are cloud platforms out there that continue to provide new features to make my development process less painful?
Language success does not mean product success. A language is just one of the many things in your toolbox. There's a reason why when many products grew larger, they all are migrating to statically/strictly typed languages.