Most people aren't running curl on the command line of their phone, and developers use java apis to make http calls. The convention is that the os, i.e. the com

Most people aren't running curl on the command line of their phone, and developers use java apis to make http calls. The convention is that the os, i.e. the company, provide the basic frameworks, which is exactly how iOS and android work. The POSIX ship has sailed, you write portable C or in a managed runtime, people rarely write to POSIX.