React Native is here to help us build apps today with performance in mind. Leveraging web won't have similar performance because it will always have a layer (br

React Native is here to help us build apps today with performance in mind. Leveraging web won't have similar performance because it will always have a layer (browser). And it will take who-knows-how-long to implement whatever API that's available on native but not in browsers. React Native allows accessing native API today. And as far as I know, FB actually tries hard to improve web by participating TC 39 actively. Web is still big part of them.