React Native (or any framework) isn’t good when you can literally afford billions of dollars of R&D given the financial value of the app. Just like the Mars rovers don’t run Python but it is a great language for a experimental SaaS app testing a new market, RN is great for a team of 3 engineers to get a multi platform app shipped, but not a great choice for an app worth ~$100 billion to its parent company.
Interestingly, there was news on some satellite running javascript. But I wonder if the core was running something else, and peripherals were run with js -- and simply restarted when they died, Erlang style.
