> Apple could convert its entire Objective-C code base to Swift if they wanted. They certainly have the resources. The amount of liquid assets they own is staggering, of a size unprecedented in history. Nevertheless, their current corporate culture suggests they cannot or will not perform this conversion.

But why? This would be an incredible waste of time and resources, to rewrite perfectly functional and working code. Rewrite it when you need to. Bloomberg still has 25m lines of FORTRAN [0] — there's no need to rewrite code when it works fine already.

[0] https://etrading.wordpress.com/2006/06/01/25-million-lines-o...