Because the other half can access the app with a react native wrapper or something like that.

In the long run, having to install the native app is an inconvenience to those users and their next phone will be less limiting. Apple is famous for their creative destruction, but sticking to their native apps breaks their appetite for innovation.

Drifting in Space [1] has just been announced. After 30 years, the General Magic[2] concept is almost reality apart from the fluid integration of client and server. How can that happen on an iPhone if Apple locks the browser? In other words, sooner or later, they either have to open the browser or become irrelevant.

[1] https://news.ycombinator.com/item?id=30502978 [2] https://en.wikipedia.org/wiki/General_Magic