It is very suitable for it’s domain, but it’s old. Programmers have no attention span and love new and shiny things. They would rather reimplement known solutions in new languages rather than struggle with new problems. So perfectly serviceable code and languages get left behind.
“He who knows only his own generation remains forever a child.“ — Alan Kay, quoting Cicero.
The greatness and wretchedness of Python is "pythonicity". It's very hard to miss the mark with Python (all things considered: life is finite, most people are more like analysts than developers, analysts deliver generally more value per hour than developers, Rust is hard to learn) but you basically need to submit to the "Pythonic" brainwashing -- which includes "anything performance-critical should be written in $fast_lang and then used from Python; but almost nothing is perf critical, and most of what's conceivably needed already exists".
These are all assumptions on my part, and my own biases may have affected my understanding of the problem.