Here are a few questions for those in the know. What makes it so difficult to add, even as a non-default app, the GNU coreutils and bash to (non-rooted) Android

Here are a few questions for those in the know. What makes it so difficult to add, even as a non-default app, the GNU coreutils and bash to (non-rooted) Android? Even nice emulators such as BTEP use Busybox, which isba fine project for very limited devices. But, as Canonical wisely reminds us time and again, we have some pretty amazing computing devices in our pockets by 2013. Now a second question is whether Ubuntu Phone's default terminal will also use Busybox. If so, why? The user not interested in this won't launch it and hence not take up RAM, right? OK, it will mean a few extra MB of flash memory... Please somebody tell me that Ubuntu Phone will make the solution as simple as simple as apt-get install bash.