We will never know. What we know is that it didn't harm them. Add Twitter to the list. They started with Rails, then switched to something else. Too many backg

We will never know. What we know is that it didn't harm them. Add Twitter to the list. They started with Rails, then switched to something else. Too many background jobs, Ruby is not ideal for that. However they became Twitter and owned that space before having to switch so Rails didn't harm them too.