1. Ruby tooling wasn't superior when Python became the standard.
2. Until Rails, IIRC, Ruby had limited visibility outside of Japan, whereas Python already had deep penetration in lots of fields.
3. Ruby for quite a while, IIRC, had a pretty bad story on Windows compared to Python.
For that matter, when Python became the standard, the modern conception of a "language ecosystem" scarcely existed.
1. Ruby tooling wasn't superior when Python became the standard.
2. Until Rails, IIRC, Ruby had limited visibility outside of Japan, whereas Python already had deep penetration in lots of fields.
3. Ruby for quite a while, IIRC, had a pretty bad story on Windows compared to Python.