[hdjjhhvvhga]

There were many MVPs built on Python that later gained popularity - but many of these (but not all!) have been rewritten in other languages at some point.

If I'd have to chose two reasons to answer your question, I'd pick up lack of static typing and relatively slow performance. Both can be alleviated (by things like MyPy, PyPy etc.) but it's not built in. You can build larger projects in Python, you just need more discipline and be realistic about potential bottlenecks.