Just a reminder of how much of YC's portfolio value is based on firms that chose Ruby:
https://charliereese.ca/article/top-50-y-combinator-tech-sta...
https://charliereese.ca/article/top-50-y-combinator-tech-sta...
No one should cargo cult off of that. Ultimately the product is magnitudes more important than the technology (at least in most cases).