The Value of Zero-Priced Software
I believe the logic for Apple is that usage of the products determines their value and therefore placing powerful software in the hands of more users means they will value the entire system more. This leads to the notion of greater “stickiness” or “lock-in” but also to higher satisfaction and loyalty, rate of upgrades and even more third party purchases and yet more usage.
This is the virtuous cycle platform custodians seek to engender. This is what Apple is trying to build and the transition of apps into the system bundle is part of this re-enforcement.
One wonders how long before Apple’s approach becomes the norm for other platforms.