Maybe you're responding to survivor bias. The companies you're talking about are the ones that got to market first and survived because they used Ruby. Those

Maybe you're responding to survivor bias. The companies you're talking about are the ones that got to market first and survived because they used Ruby. Those that didn't simply aren't around any more. ...like those competitors to Github and Gitlab that bet against Ruby. :P More seriously you're probably just not aware of the wider market. Rails >7, including Hotwire, is fantastic for small productive start ups. If you want to move fast use full-stack Rails.